The now-reformed Bad Guys are trying (very, very hard) to be good, but instead find themselves hijacked into a high-stakes, globe-trotting heist, masterminded by a new team of criminals they never saw coming: The Bad Girls.

On the rugged isle of Berk, where Vikings and dragons have been bitter enemies for generations, Hiccup stands apart, defying centuries of tradition when he befriends Toothless, a feared Night Fury dragon. Their unlikely bond reveals the true nature of dragons, challenging the very foundations of Viking society.