Here's another one of my fan-fictions.
Imagine if Hiccup had mounted Toothless in the ring after he was saved from the Monsterous Nightmare.
Once Hiccup was saved by toothless, his father dashed towards them with his axe raised but to the chief's surprise, they flew away.
Hiccup flew as far away from Berk as fast as he possibly could and promised to never return because Hiccup knew he never truly belonged with them, the dragons killers while he was a dragon at heart.
After Hiccup ran away he was soon presumed dead. 5 years later, Alvin the treacherous kidnapped Stoick to settle a feud. Both with Stoick and someone else.
Stoick knew Hiccup was out there somewhere, alive and well deep down; but he kept trying to convince himself otherwise, and it was getting to be too long with too little hope.
Then a strange young man shows up on the outcast island.