After winning his chance to kill his first dragon, Hiccup decides it's time to leave. There's no way he's staying on this island any longer and there's no way, he's killing a dragon. But as the young Berkian heir flies into the night, he's not alone. He has finally found where he belongs and a family that loves and cares about him. Who would have thought a group of misunderstood teens would make the perfect family, and that's not counting the people they work with. But as a threat larger than any of them is heading for Berk, will he be able to risk it all to save the people who never believed him? And why does his found family keep working against him?