Hiccup Horrendous Haddock III/Synopsis

How to Train Your Dragon
At the start of the film, 15-year-old Hiccup is an embarrassment to his father, Stoick the Vast, the chief of the Hairy Hooligan tribe. Too small to wield traditional Viking weapons and therefore unable to kill a dragon like the rest of his village, he works as an assistant to Gobber the Belch, the village Blacksmith. One night during a dragon raid, Hiccup leaves his indoor workpost and, with a bola sling named "The Mangler," manages to shoot down one of the deadliest and most feared dragons in the skies: the Night Fury.

When he goes to find his kill, after what appears to be many failed attempts, he find the dragon and discovers that it's still alive. Despite his determination to prove himself to the community as a great dragon killer, Hiccup is unable to kill it after seeing the fear in its eyes, and instead frees it.

Meanwhile, as he is looking for the Night Fury, Hiccup is enrolled into Viking training, where he is expected to learn to fight and kill dragons. At first, he struggles to complete the simplest tasks and hold his own against even the most (relatively) benign dragons, earning the usual mockery of his fellow teenagers. However, after managing to get close enough to bond with the Night Fury he shot down, which he names Toothless after its retractable fangs, he builds him a fake tail to replace the one his bola injured, helps Toothless regain the ability to fly with Hiccup's assistance, and jumpstarts their friendship. He gains valuable experience and a deeper insight into the mannerisms of most dragons, such as the fact that it is possible to scratch a dragon into submission if it is scratched gently in a certain spot under the chin. He is soon hailed as a Viking prodigy, with the time he spends with Toothless allowing him to ultimately "defeat" every dragon he encounters during training.

The stress of living this double life is hard on Hiccup, however. The other Vikings, particularly Astrid, take notice of his unexplained absences after dragon training sessions, although no one really comments on it. Eventually, after Hiccup places the top in training, Astrid manages to follow him and discovers Toothless. She runs off to tell the other Vikings, but Hiccup and Toothless stop her, flying her around the area on Toothless to calm Astrid down. It is during this ride that Hiccup sees the Green Death in the very Dragons' Nest his father has been dying to find and destroy. When they land, Hiccup manages to convince Astrid not to tell anyone about anything that happened by showing how loyal he is to his dragon. After their conversation, Astrid kisses Hiccup on the cheek after punching him in the shoulder, seeming to admire his loyalty.

The next day, Hiccup is required to fight and kill a Monstrous Nightmare as part of his final exam during dragon training. The task goes horribly wrong, however: when Stoick swings his hammer against the dragon training cage in response to Hiccup's blasphemous claims that dragons "aren't what we think they are" and that "we don't have to kill them". Hiccup's methods of dragon appeasement no longer work and the Nightmare moves in for the kill. Toothless, hearing Hiccup's scream, tries again to get out of the cove alone, and, succeeding for the first time, rushes to the scene and beats the other dragon back while at the same time revealing himself to all the Vikings. Though Hiccup attempts to explain why he went against the Viking way of life and befriended a dragon, his father fails to listen, renounces him as his son, and instead takes advantage of Toothless, chaining him to a ship and using him to reach the Dragons' Nest. As the adult Vikings leave in search of the Nest, Astrid talks to Hiccup about the entire situation and asks him what he's gonna do about it, which leads him say "something crazy." He goes off to do his 'crazy' plan, while Astrid apparently gathers the other Viking teenagers. Hiccup brings out the now tame Monstrous Nightmare, and teaches them how to ride on the back of a dragon.

While the Vikings try to fight a losing fight, the teens fly into the scene, with Gobber commenting that Hiccup is, "Every thread of a stubborn, bone-headed Viking you ever were," to Stoick, who nods numbly. Hiccup goes onto the burning ship where Toothless is, and tries to free him, but soon the ship broke apart, pulling Toothless down to the seafloor. Hiccup still fails, however, and goes limp after a few moments of trying, only to be saved by his father, who also frees Toothless from his chains. After Toothless pulls him up to land again, Stoick tells his son that he doesn't have to do this, to which Hiccup replies, "We're Vikings. It's an occupational hazrd."

In response to the familiar words, Stoick tells Hiccup how proud he is to call him as his son, just before Hiccup and Toothless fly off to confront the Green Death themselves. Hiccup manages to kill the Green Death by having Toothless shoot holes into its wings, and then diving towards the Nest at a high speed, so that after Toothless blasts a firebolt into its mouth, it cannot pull up in time. During the fight, though, Toothless's fake tail caught on fire, so as they are pulling out the last part of the plan (blasting fire into its mouth), they're running out of time. The Green Death crashes into the ground, triggering an explosion on impact. Hiccup and Toothless fly through its various spines and the flame; however, they run into the Green Death's tail at the last moment as they attempt to escape the resulting blast. The tail having fallen off, the two fall thousands of feet into the blaze below. As the village approaches the site of the explosion and finds that Hiccup is nowhere to be found, Stoick soon discovers that, even without his makeshift tail, Toothless protected the Chief-to-be from the blast by folding him in his wings. Hiccup's prosthetic leg.When he wakes up after an unknown amount of time, Hiccup is heralded as a hero in the tribe. Although he lost part of his left leg in the battle, he is fitted with a prosthetic that Gobber made, "With a little Hiccup flair thrown in it." This new prosthetic matches Toothless's makeshift tail, and clips right into place. At the very end of the film, Astrid kisses Hiccup on the lips, this time seemingly as boyfriend and girlfriend, as the rest of the village accepts dragons onto the island as pets and companions.

How to Train Your Dragon 2
Five years later, Hiccup (now 20) has made Berk fully involved in riding dragons, during his years on Berk he has made great contributions such as custom stables, all you can eat feeding stations, a full-service dragon wash, top of the line fire prevention methods, even making Dragon Races that now serve as entertainment for Berk, putting the dragon problem fully behind them. Now that his hard work has payed off, Hiccup and Toothless travel across very distant lands and uncharted territories. He is also uses this as a reason to avoid his father. Hiccup is also known as The Pride of Berk throughout the village, and Stoick believes he is ready succeed him as chieftain. This pressures Hiccup, because he doesn't think he's fully ready for such a big responsibility. He and Toothless crash-lands onto a strange new place that Hiccup names Itchy Armpit. Soon, Astrid and Stormfly catches up with the duo. As Hiccup and Astrid come across the destroyed fort of Eret, Son of Eret, Hiccup discovers that there are other Dragon Riders and hears from Eret, about the tyrannical Drago Bludvist, who is currently assembling a huge dragon army to take over the world.

Hiccup and Astrid escape from Eret's men and head back to Berk. As they arrive, Hiccup informs his father about Drago Bludvist, and Stoick quickly orders the villagers to fortify and protect the island from the "madman", but Hiccup suggests that there must be another way besides war. His father rejects this and orders the men to close the stalls and keep the other dragons under lock-and-key. But Hiccup refuses this method, and stages a mutiny by escaping from the stalls before the doors close, with Astrid following him. Hiccup heads back to Eret, and tells them that he wants to meet Drago so he can change his mind about dragons, but Stoick, Gobber and the other Riders interfere as they manage to find them. Stoick doesn't want Hiccup to go through with his plan, as he explains that Drago kills people without reason and concludes that he cannot be reasoned with. Even so, Hiccup still refuses to believe this and rebels against his father's wishes to find him.

Meanwhile, Hiccup flies over the clouds, over thinks his father's sayings and furiously screams in mid-air. Toothless becomes worried for his friend, but Hiccup promises that he'll keep him under protection no matter what. Suddenly, a figure emerges, and Hiccup thinks that it's his dad again but discovers a mysterious vigilante Dragon Rider, whom he later discovers is his long lost mother, Valka.

Hiccup wonders why Valka never had the intention to return to Berk after all these years that she survived. Valka responds that twenty years ago, a dragon broke into their house and she quickly rushed to Hiccup's rescue but only discovered that the dragon was not a vicious beast, but a gentle and intelligent creature, "whose soul reflected my own." However, Stoick spots the dragon and interferes; the dragon attacks him nearly burning him alive. Valka tells the dragon to spare him; the dragon suddenly looks at Valka while Stoick rescues an infant Hiccup. But unable to rescue Valka who is now abducted by the dragon, putting inside his mind that she was in fact going to get killed. But the dragon did not in fact harm her, and she never had the intention to return because she thought it would be safer for them, because she couldn't kill a dragon. Hiccup and his mom start over again and bond with each other more mutually this time with their dragons and enjoy the time they have.

Later, Hiccup discovers also that Valka does not have the intention to reason with Drago and decides to do it himself. Suddenly, Stoick and Gobber locate him and are about to escape the Sanctuary, but Stoick is shocked in silence to see his beautiful wife still alive and they rekindle their once more. Hiccup has never experienced such joy in reuniting with his mother and father. However, their celebration is cut short; they were unaware that Drago has set up their weapons on shore and orders the final attack on the Sanctuary. Later, the Bewilderbeasts engage on one another to determine who is truly the Alpha of all the Dragons. Unfortunately, Drago's Bewilderbeast emerges victorious. Hiccup confronts Drago, and tries to reason with him but Drago ignores his claims and orders his Bewilderbeast to kill Hiccup, which decides to send in Toothless instead. Toothless, now hypnotized, fires a plasma blast at Stoick, who manages to push Hiccup away and is killed instead. Hiccup, shocked to believe that his father has been killed, blindly yells at Toothless who got released from the Bewilderbeast's control to go away and leave them alone.

Hiccup, Valka, Gobber, Astrid, and the other Riders hold a funeral for Stoick where Hiccup says his last wishes to his father. It seems that all hope is lost, as Drago and his Bewilderbeast freeze Berk, but Hiccup becomes inspired by his mother's words, and is now determined to avenge his father and continue his legacy and get his best friend back. Flying back to Berk on baby dragons, he quickly arrives to face Drago and tries to disenchant Toothless saying he knows Toothless would never hurt him or Stoick willingly, which he amazingly succeeds. Now, Hiccup and Toothless manage to fend off Drago and his Bewilderbeast and concludes that it's over, unaware that the Bewilderbeast has them in its sights and fires at them, encasing them in a huge blast of ice. Drago feels victorious, but the huge ice explodes and discovers that Hiccup and Toothless are unharmed. Toothless, now glowing with plasma, challenges the Alpha to protect his Rider. Toothless simultaneously fires plasma blast and frees the other dragons, who are touched by the bond between him and Hiccup. Drago is shocked to believe this. Hiccup orders Drago to stand down and let this end, but Drago strongly refuses and orders his Bewilderbeast to attack but unable to as all the dragons fire at it. Toothless fires one last plasma blast which massively explodes, destroying on of the Bewilderbeast's tusks, and defeating it at the same time. The Bewilderbeast retreats to the ocean, along with Drago.

Finally, the fight is over and Toothless is acknowledged as the new Alpha. At the same time, Hiccup now crowned as the new Chief of Berk by Gothi the Elder. The dragons and villagers celebrate, and Hiccup continues his father's legacy by building a statue in his honor. Hiccup proudly announces that they may be a small community but are capable of maintaining peace and can stop those who oppose, and they have something that even the greatest invaders don't have: they may have armies and armadas but Berk has their own dragons.

How to Train Your Dragon: The Hidden World
Hiccup continues to rescue dragons with his fellow Dragon Riders and friends. Even though he has fulfilled his dream of creating a utopia where humans and dragons live together, Hiccup still tries to save dragons and bring them to Berk while dreaming of finding the mythical 'Hidden World', a safe haven for dragons his late father Stoick told him about. Unfortunately, his efforts have also resulted in the island becoming severely overpopulated with dragons.

Hiccup and Tuffnut later discover Grimmel's dragon traps in the woods. Grimmel visits Hiccup that night, but the latter has prepared an ambush to capture him; Grimmel manages to escape, burning Hiccup's house in the progress. Hiccup rallies Berk's citizens and dragons to leave Berk on a quest to find the Hidden World.

Seeing Toothless' inability to fly solo hindering his growing relationship with the Light Fury, Hiccup builds him an automatic tail. Upon receiving the tail, Toothless flies off, meeting the Light Fury on his own and flying with her to an unknown land. Valka, on a scouting patrol, notices Grimmel's approaching army, quickly reporting back to warn Hiccup. Hiccup and the Dragon Riders head to capture Grimmel; yet, they fall into his trap, barely escaping.

Hiccup and Astrid search for Toothless, finding the Hidden World and seeing Toothless and the Light Fury leading the dragons there as Alphas and mates. However, the two are soon discovered, Toothless being forced to leave and take Hiccup and Astrid back to the Berkians. Hiccup realizes his people wouldn't be safe living with dragons in the Hidden World, and moreover, have no business intruding upon the dragons' home.

With Astrid's encouragement, Hiccup sets out with the Dragon Riders to stop Grimmel and his army and save Toothless, the Light Fury, and all the captured dragons. Hiccup, realizing he cannot save Toothless by himself, frees the Light Fury instead and commands her to save the Night Fury. Hiccup and Grimmel plummet to the ground with Hiccup fully accepting that this may be his end. The Light Fury, however, unexpectedly returns to save Hiccup.

The battle won, back on the island, Hiccup fully realizes that the dragons will likely never be safe in the human world and that the Hidden World is where they truly belong. With great sadness, Hiccup and Toothless bid farewell to each other as all of the Berkians set their dragons free. Sometime later, Hiccup and Astrid are married as the Berkians settle permanently onto their new island. Years later Hiccup, Astrid and their two children sail across the sea to visit Toothless, the Light Fury, and their three offspring at the edge of the Hidden World; Hiccup vows that until mankind can coexist peacefully with dragons, the dragons will stay hidden while the Berkians guard their secret.