Berk has been host to many people and dragons from many regions, but Grimmel and his large armada of dragon hunters were the worst guests by far. However, even the darkest night must eventually yield to the new dawn.

With the tyrannical Drago and his Bewilderbeast defeated, Hiccup has enjoyed his first year as the chief of a tribe at peace with its dragons and its neighbors. However, something strange happens and Hiccup feels… different. Astrid is displeased.