Thyra, daughter of Hiccup and Astrid, is probably the only Viking on Berk who strongly dislikes dragons. Nobody else she knows dislikes dragons, and she doesn't know why she has had this dislike when nobody else seems to have it.
It isn't till one day when she finds a dragon lost in the woods, that she realizes things aren't as they seem...
... and what she thought she was, isn't who she truly is.
Here hiccup is a girl named helda the most weak viking ever to be in history under appreciated by everyone including his father and peers. Feeling misunderstood and hurt by their action. she ran away from berk and became the master of dragons, the champions and all various names but nobody knew her real name all of them just 'him' the master of dragons,she was considered as a man behind the mask. she discovered new dragons and lived on an isolated island secluded in the archipelago. Astrid is a boy named aster, he became the new heir to berk after the supposed death of helda. Suddenly a new disease and dragon attacks fell upon them and caused berk to almost fell in ruins.the situation messed up when johann the trader disappeared. The council of berk decides to take action and ask gothi for a solution.