It's been a month since Dragons and Vikings were brought together, now the only thing left to do is train them. Its close to winter in Berk, putting everyone on edge for food. Hiccup, the chiefs son, also the one that brought dragons and Vikings together isn't worried about the snow at all. He's usually the one to take advantage of the snowy weather, going dragon sledding with Astrid and the gang. But when Hiccup, mysteriously falls ill with an unknown sickness, Stoik's worries for his survival in the cold grow. In hopes to cure his only son Stoik sets out to sea to find the right medicine leaving Hiccup in the constant care of Gobber and Astrid. When tragic strikes, and Hiccup is now left on his own, his chances of surviving become small.

And in one moment, everything changed. In one moment, they drove him away. In one moment, their Hiccup became so fed up and angry that he ran. He ran away as fast as he could as far as he could, never to return. What if someone is hurt beyond what any child should be hurt, driven away, and has to find his own way? What if that same someone is given comfort in those animals the people who hurt him despise? If you were that person, which side would you be on? Would you slowly but surely, turn into someone with a cold heart? Follow Hiccup on his journey of finding himself, though that person might not be what you expect.

Accidentally in love sequel

Someone who is willing to stand up for he believes in even when others won't. Someone who will fight for the people that bullied him just because. A true hero isn't measured by the size of his strength but by the size of his heart. -HTTYD fanfic