The only world that Starflight can see out of is in his dreams. After a nightmare of a reoccurring event that left Starflight blind, he receives help from the other dragonets to find a way to overcome his menacing flashback. The only way to help is to acquire a Dreamvisitor and go in themselves.

Two months after the Battle of the Bewilderbeast and the fall of Stoick the vast; Hiccup and Toothless set out on a quest to find other Night Furies, but end up in Pyrrhia, after a giant waterspout pulls them out the sky, meeting the Dragonets of Destiny, hoping they have a way to Berk.