The Ordinary World: Hiccup is a young boy who lives on the Island of Berk (a mythical viking world). He is not like the normal vikings who live there. It seems that he is never able to do anything right. This frustrates Hiccup because his father is the chief and he wants to become the kind of person that he is. On their island, dragons come and steal their food. Hiccup wishes to kill a dragon to show that he is a true viking.
The Call to Adventure: During one of the dragon fights, Hiccup feels the urge to sneak away and try and kill a dragon. He feels that the needs to prove himself to the others for them to see that he does fit in. He hits the dragon but in the process, he ends up messing things up and the dragons get away with all of the village's food.
Refusal of the Call: Hiccup's refusal is when he doesn't kill the night fury. As much as he wants to prove himself, he cannot get himself to kill the dragon because he feels sorry for him and can see the fear in it that he also has himself. By refusing to kill the dragon, he is given a call to learn more about dragons because from what he has learned already, they are not what the vikings seem to think they are. However, at first he refuses this call as well.
Meeting the Mentor: Hiccup has two mentors. Gobber and Toothless. Gobber is his dragon trainer. Toothless, the dragon, does not become Hiccup's mentor right away but as Hiccup gets to know him, Toothless shows him things that he never knew and shows him that dragons are not evil after all. This is able to help him become a great dragon trainer and succeed in his dragon training classes.
Crossing the Threshold: Hiccup crosses the threshold when he decides not to kill a dragon in front of his village for being the best in dragon training. He tries to show them that dragons are not as the vikings percieve them to be. His father does not approve of this and starts a fight.
Tests, Allies, Enemies: When Toothless hears Hiccup screaming he comes to the rescue to try and save Hiccup. Because the vikings did not believe Hiccup, they capture Toothless to lead them to the dragons nest. They want to destroy it so that they can prevent the dragons from stealing their food. Little do they know that there is something bigger in their nest that they will not be able to defeat. Hiccup knows this so he makes a plan for all of his dragon training classmates to go and save Toothless and the other vikings from death.
Approach to the Inmost Cave: When Hiccup and his friends go to help the others, the king dragon has already come out and his attacking everything in it's sight. They got there too late to stop them from unleashing the king dragon. Now they must improvise to stop the dragon from killing everyone and everything.
The Ordeal: Toothless is trapped in a boat that is on fire and Hiccup cannot get him out. They get knocked into…