Five years after the events of Jurassic World Dominion, the planet's ecology has proven largely inhospitable to dinosaurs. Those remaining exist in isolated equatorial environments with climates resembling the one in which they once thrived. The three most colossal creatures within that tropical biosphere hold the key to a drug that will bring miraculous life-saving benefits to humankind.

On the rugged isle of Berk, where Vikings and dragons have been bitter enemies for generations, Hiccup (Mason Thames; The Black Phone, For All Mankind) stands apart. The inventive yet overlooked son of Chief Stoick the Vast (Gerard Butler, reprising his voice role from the animated franchise), Hiccup defies 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.