How to Train Your Dragon is a 2025 fantasy film and a live-action remake of the 2010 animated film by DreamWorks Animation, itself loosely based on the 2003 novel by Cressida Cowell. The film was written for the screen and directed by Dean DeBlois, who co-wrote and directed the animated film. It stars Mason Thames, Nico Parker, Gabriel Howell, Julian Dennison, Bronwyn James, Harry Trevaldwyn, Peter Serafinowicz, and Nick Frost, with Gerard Butler reprising his role as Stoick the Vast. The film is set on the rugged Isle of Berk, where Vikings and dragons have been bitter enemies for generations.