As Hiccup fulfills his dream of creating a peaceful dragon utopia, Toothless' discovery of an untamed, elusive mate draws the Night Fury away. When danger mounts at home and Hiccup's reign as village chief is tested, both dragon and rider must make impossible decisions to save their kind.
Written by
JC Jamison
Plot Synopsis:
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The film opens on a dragon trapper ship. Hiccup (voice of Jay Baruchel) and Toothless infiltrate it to rescue captured dragons, with Hiccup wearing a suit of dragon scales to walk through fire. They are joined by Astrid (voice of America Ferrera), Snotlout (voice of Jonah Hill), Fishlegs (voice of Christopher Mintz-Plasse), Ruffnut (voice of Kristen Wiig) and Tuffnut (voice of Justin Rupple), all wearing scale suits and riding in on their dragons to fight the trappers. The heroes free the dragons and escape, unaware that they have left one behind.

The Dragon Riders return to Berk, which is now wildly overpopulated with dragons that they have rescued over the last year, with one new dragon knocking over a whole row of dragon towers. Hiccup has been leading the villagers as chief, but he still doesn't feel that he is the chief his father was. Meanwhile, Valka (voice of Cate Blanchett) has been helping train other dragons. Gobber (voice of Craig Ferguson) suggests that Hiccup and Astrid should get married soon, but neither of them feel they are ready in their relationship to take that step.

A notorious dragon slayer called Grimmel the Grisly (voice of F. Murray Abraham) arrives to meet with the warlords that have been capturing dragons. When they tell Grimmel about Hiccup and Toothless, he finds himself surprised, as he had believed to have slayed every last Night Fury. The warlords show Grimmel the dragon that was left behind, a white Night Fury ("Light Fury" as it will later be known). He decides to use her as bait to lure Toothless to him, and he doesn't worry about Hiccup since Grimmel sees him as just a boy in over his head.

We see a flashback of a young Hiccup with Stoick (voice of Gerard Butler), who tells his son about the legend of a hidden world of dragons. He had hoped to find it so that he can end the fighting between vikings and dragons.

Toothless goes out alone at night and comes across the Light Fury. He becomes enamored by her and starts making an attempt to woo her. Hiccup and Astrid come across them, but they startle her and she fires a blast in their direction before she vanishes into thin air.

Toothless falls in love with the Light Fury, which Hiccup can see. He takes Toothless and Tuffnut (who wants to give Hiccup relationship advice) back into the woods to look for her, but Hiccup manages to detect one of Grimmel's traps before it catches Toothless. He brings back a tranquilizer dart they found, which Eret (voice of Kit Harington) recognizes as Grimmel's work. He warns Hiccup that Grimmel most likely wanted them to find that trap as a means to lead him right back to them.

That night, Hiccup finds Grimmel has snuck inside his house and seemingly tranquilized Toothless. He orders Hiccup to give Toothless up and expresses how he thinks humans and dragons shouldn't co-exist since he views humans as being superior. When he goes to Toothless, it turns out that he shot Fishlegs, and Hiccup's friends and family come out to ambush Grimmel. However, he summons his acid-spitting Deathgrippers to tear through Hiccup's home. He gathers the Berkians together and realizes that with Grimmel going after them, it is no longer safe to stay in that land. While some of the villagers argue against leaving their homes, Hiccup tells them that they are Berk no matter where they live. However, Grimmel was counting on them to abandon their homes all along, and he plans to keep tracking Toothless with reluctant help from the warlords. all while making more of the venom to tranquilize dragons.

The Berkians travel with the dragons to another island to stay temporarily. The Light Fury appears to follow the group, but she vanishes after knocking Hiccup off of Toothless's back after mistaking him for an enemy. She reappears later that night, and Toothless goes after her. Hiccup wakes up and goes to try and help him out. Toothless does goofy dances to court the Light Fury, which does not impress her. He then manages to draw her face in the sand, which she seems to like. Unfortunately, she flies away again when she spots Hiccup, and Toothless is unable to fly after her because of his bad fin. Hiccup later decides to fix up the fin and paint it black so that Toothless can go and find the Light Fury.

Valka heads back out on Cloudjumper to make sure the villagers weren't followed. They are spotted by the Deathgrippers, who try to attack and bring them down, but the two manage to escape and head back to warn Hiccup.

Toothless flies until he finds the Light Fury. They take flight together as she demonstrates her ability to camouflage herself using her fire breath. With her help, Toothless is able to use his own power with lightning to achieve the same effect. They continue flying until the Light Fury brings Toothless to a waterfall.

After learning Grimmel is hot on their trail, Hiccup leads the Dragon Riders to catch him, but he was expecting this, so they have fallen into his trap. He sends the Deathgrippers after them, but they manage to evade them and escape. They accidentally leave Ruffnut behind and don't realize it until they return to the island. Hiccup is then pressured into finding another solution to stopping Grimmel. He notices Toothless hasn't returned, and Astrid reminds him that he gave Toothless his freedom to be with the Light Fury.

As Grimmel tries to make his next move, Ruffnut starts to annoy the hell out of him with her endless talking, so he frees her. Ruffnut inadvertently blabs about their new location, so he keeps a close eye on her to see where she's headed.

Hiccup and Astrid ride Stormfly to find Toothless. They come across the waterfall and are flown down into the hidden dragon world, which is vast and beautiful. They see Hiccup acting as the alpha to all the dragons (you can even see Drago's Bewilderbeest among them), with the Light Fury now officially being his mate. The other dragons spot Hiccup and Astrid and chase after them. Toothless and Stormfly grab them and flee. Hiccup starts to figure that the Berkians couldn't live with the dragons in their world and that maybe that's where the dragons ought to be.

Ruffnut returns to the village, and Grimmel has followed her back. He and his men, plus the Deathgrippers, start to attack again, this time ending with Grimmel successfully capturing Toothless and the Light Fury. The other dragons are forced to follow Grimmel since he has their alpha, and he threatens to kill the Light Fury if Hiccup follows. Hiccup feels hopeless and sees himself as a failure as chief. Astrid encourages him as she always has, letting him know she was the first person to believe in him and will always be there to pick him up. Hiccup rounds up his friends with their dragon suits to fly after the ship.

Grimmel brings his captured dragons to the warlords, but he tells them that he plans to kill Toothless for himself, denying them the chance to have him for themselves. The heroes then swoop in to free their dragons and take on Grimmel's army. They manage to steer the dragon trapper ships toward each other, causing the trappers to abandon ship as they all sink. Grimmel attempts to kill Hiccup, but he manages to free Toothless. Grimmel takes the Light Fury to the sky, leading Hiccup and Toothless to chase after them. The Deathgrippers fly in and surround Toothless, until he harnesses his lightning power and electrocutes them all before vanishing. He appears before Grimmel, and Hiccup jumps toward him. Grimmel tranquilizes Toothless, sending him falling to the ground. Hiccup tackles the villain and frees the Light Fury, order her to save Toothless as Hiccup and Grimmel fall. The Light Fury catches Toothless and lands with him on a cliff. Grimmel tears Hiccup's suit apart, but the Light Fury flies toward Hiccup. He loosens his prosthetic foot, sending Grimmel to his watery grave as the Light Fury catches Hiccup.

The Berkians celebrate their victory until Hiccup realizes it is time to let Toothless go. He bids his best friend farewell, and the two embrace tearfully. The other Berkians must then say goodbye to their beloved dragons. They fly toward the hidden world, with Toothless sharing one last look with Hiccup.

A while later, Hiccup and Astrid get married, making them chief and chieftess. We then cut to years later where Hiccup and Astrid now have a son and a daughter. They ride a boat toward the hidden world and come across Toothless and the Light Fury sitting together on a rock with three little dragons of their own. Toothless flies over to the boat and does not seem to immediately recognize Hiccup. He slowly moves his hand toward his snout as he did when they first met, and Toothless pounces on Hiccup for the first time in perhaps a decade. Astrid then brings the kids over so that Hiccup can introduce them to Toothless. They then take flight on Toothless, Stormfly, and the Light Fury together as a family. Hiccup says that although people now believe that the dragons are gone for good, the Berkians know the truth and will continue to protect their secret until the day dragons can come back out in peace.

DreamWorks Animation's first franchise in which each movie was distributed by a different film studio: Paramount Pictures distributed How to Train Your Dragon (2010), 20th Century Fox distributed How to Train Your Dragon 2 (2014), and Universal Pictures distributed How to Train Your Dragon: The Hidden World (2019).
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When Hiccup is making Toothless a tail that will allow him to fly on his own, Astrid says "you tried that once before; he didn't want it." This refers to the Dragons holiday special, 'Gift of the Night Fury.'
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In a poll conducted by Fandango, this ranked as the second most anticipated animated movie of 2019, right under Toy Story 4 (2019).
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In September 2012, 20th Century Fox, the studio's then-distributor partner, and DreamWorks Animation announced the film was originally going to be released on June 17, 2016. In September 2014, the film's release date was pushed back a year from its original release date of June 17, 2016 to June 9, 2017. In January 2015, the release date was pushed back a year from June 9, 2017 to June 29, 2018 following DreamWorks Animation's corporate restructuring and lay-offs. On June 18, 2016, the release date was moved up from June 29, 2018 to May 18, 2018, taking the release date of Warner Animation Group's The Lego Movie 2: The Second Part. On December 5, 2016, the release date was pushed back from May 18, 2018 to March 1, 2019. The release date was moved up for a final time from March 1, 2019 to February 22, 2019, taking the slot of The Turning, a live-action DreamWorks film which in turn was pushed back to January 24, 2020. Which makes How to Train Your Dragon: The Hidden World have a total of six release date changes.
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Justin Rupple will replace T.J. Miller as the voice of Tuffnut Thorston after T.J.'s destructive behavior made headlines in mid-2018.
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With a running time of 104 minutes, this is DreamWorks Animations longest film, besting the 102 minute runtime of this film's predecessor How to Train Your Dragon 2 (2014).
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Unlike How to Train Your Dragon 2 (2014), the third film will have a subtitle, ''The Hidden World'', instead of being numbered. The second film was at one point subtitled ''Secrets Of The Ice Cave'' before being shortened to just ''How To Train Your Dragon 2''.
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DreamWorks Animation's fourth trilogy after "Shrek" (followed by a fourth film and a spin-off), "Madagascar" (followed by a spin-off), and "Kung Fu Panda".
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The first official poster was revealed on May 31, 2018, and shows Toothless face to face with a white Night Fury.
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Months before the films release, Amazon and other websites released preview pages for the book tie-ins to The Hidden World. Some of the pages in the books spoiled major plot points of the movie. The pages have since been taken down.
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The first DreamWorks Animation film to be distributed by Universal Pictures.
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Similar to Shrek Forever After (2010), a montage of clips from the previous films play through the end credits.
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This is the first DreamWorks Animation film to feature DreamWorks logo with "A Comcast Company".
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On April 17, 2018, a little less than a year before this film's release, the title was confirmed to be How to Train Your Dragon: The Hidden World rather than simply How to Train Your Dragon 3. However, this is the original title, as the film was released in most countries as How To Train Your Dragon 3.
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This film was originally going to be released in 2018 as one of the last DreamWorks movies to be distributed to 20th Century Fox but was moved to 2019 as the first DreamWorks movie to be distributed to Universal Pictures.
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Dean Deblois announced on his Instagram that this movie was finished being made on November 29, 2018, 85 days before its release.
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The 1st trailer of this film was released on June 7th 2018, the 48th birthday of director/writer Dean DeBlois.
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Jay Baruchel, America Ferrera and Christopher Mintz-Plasse are the only actors to reprise their roles in both movies and TV series
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This film has the best opening weekend of the franchise with $55 million. It then only took 12 days to gross over $100 million domestically.
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This will be the first time in the franchise that Tuffnut Thorston is voiced by somebody other than T.J. Miller.
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Shipped to theatres under the title 'Royal Flush'
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All the "How to Train Your Dragon" movies have been released by different studios. The first was released by Paramount, the second by 20th Century Fox, and the third by Universal.
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Craig Ferguson's seventh theatrically released animated movie, after How to Train Your Dragon (2010), Winnie the Pooh (2011), Brave (2012), The Hero of Color City (2014), How to Train Your Dragon 2 (2014), and Duck Duck Goose (2018).
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This is the only film in the franchise to not begin with Toothless in the opening logo or opening narration from Hiccup.
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The second DreamWorks Animation film to be rated PG for adventure action and some mild rude humor by the MPAA, after How to Train Your Dragon 2 (2014).
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The fourth Universal's animated film to be produced in 2.35:1, after The Tale of Despereaux (2008), Despicable Me 3 (2017) and The Grinch (2018).
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On October 7th, 2018, it was confirmed that the second trailer would be released on October 25th, 2018, 18 days later.
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The first theatrical release from DreamWorks Animation since "Captain Underpants: The First Epic Movie" (2017)
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Universal's third animated sequel film to be rated PG by the MPAA, after Despicable Me 2 (2013) and Despicable Me 3 (2017).
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The ninth Universal's animated film to be rated PG by the MPAA, after Despicable Me (2010), The Lorax (2012), Despicable Me 2 (2013), Minions (2015), The Secret Life of Pets (2016), Sing (2016), Despicable Me 3 (2017) and The Grinch (2018).
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The second Universal Pictures animated film to be released in February, after Curious George (2006).
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This is the first Universal's animated film to have a PG rating in the UK.
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Grimmel reveals the reason why Toothless is the last Night Fury: It's because he hunted every other single one: This explains why in the first film, the Book of Dragons had nothing on Night Furies. However, in the Hidden World, several surviving Light Furies can be seen among the dragons.
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The giant Alpha Dragon(The Bewilderbeest) from How to Train Your Dragon 2 (2014) (who got his tusk shot off by Toothless) can be seen in the crowd of dragons in the Hidden World.
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In earlier drafts of Dragon 3, Drago Bludvist was planned to reprise his role as the movie's main villain, and be redeemed by the end of the story. In a recent interview with Cloneweb, it was revealed that Drago's redemption, and overall return, was scrapped halfway through the movie's production.
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Director DeBlois has confirmed that the plot will revolve around Toothless and Hiccup parting ways forever.
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Astrid's hairstyle and clothing changes over the course of the films. In the first film, she wears her hair in a tight braid and wears clothes covered in armor and spikes. These symbolize her initially harsh and overly aggressive personality. In the second film, she wears a looser braid and her clothes have a noticeably softer appearance. These show how Hiccup's kind and loving nature has influenced her. In this film, her hair is now in a half-braid and her clothes are more sleek and feminine. These mirror her maturity and full change of heart.
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This is the last film in the franchise, ending the journey between Toothless and Hiccup.
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When Hiccup and Toothless are about to part ways forever, Hiccup's hand leaves Toothless' snout in a shot that references the first movie, in which Hiccup turns his head away, puts his hand out, and Toothless touches his snout to Hiccup's hand. A bit later, when Hiccup is introducing his kids to Toothless, the music that plays is a rearrangement of the music that plays in that same scene from the first movie.
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Near the end of the film, the beginning of Hiccup's closing narration is almost exactly like the introduction found in the first "How To Train Your Dragon" book by Cressida Cowell.
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