We’ve already seen a couple of teaser trailers for A Monster Calls, which features Liam Neeson as a giant tree monster. Now an excellent official trailer has been released by Focus Features. You can check it out below.

The movie follows a young boy who escapes to a fantasy world while trying to cope with his mother’s sickness and the schoolmates who bully him. It also stars Felicity Jones (The Theory of Everything, Rogue One: A Star Wars Story), Sigourney Weaver (Alien, Ghostbusters), Lewis MacDougall (Pan), and Toby Kebbell (Dawn of the Planet of the Apes, Warcraft).

A new trailer has been released for A Monster Calls, a fantasy drama from director J.A. Bayona (The Orphanage, The Impossible) that’s an adaptation of the children’s novel of the same name written by Patrick Ness, who also penned the screenplay. It stars Felicity Jones (The Theory of Everything, Rogue One: A Star Wars Story), Sigourney Weaver (Alien, Ghostbusters), Lewis MacDougall (Pan), Toby Kebbell (Dawn of the Planet of the Apes, Warcraft), and Liam Neeson (The Phantom Menace, Batman Begins) as a giant talking tree monster.

A Monster Calls tells the story of a boy who escapes to a fantasy world in order to help him deal with the illness his mother is suffering from and the bullies who torment him at school. The novel it’s adapted from was written based on an original idea by author Siobhan Dowd, who came up with it while suffering from terminal cancer but sadly passed away before she was able to write it.

You can read more about the movie and check out the trailer below.