British actor and Oscar winner Eddie Redmayne is lending his voice to HIT Entertainment’s new Thomas and Friends movie Sodor’s Legend of the Lost Treasure.

The new 60-minute CGI movie is executive produced by Christopher Keenan. Set for DVD of VOD release this fall in the US, the film follows Thomas as he explores a new part of the Island of Sodor.

The Theory of Everything and Les Misérables star voices new tank engine Ryan. Also joining the cast are actors John Hurt (Harry Potter, Tinker Tailor Soldier Spy) as Sailor John and Campbell Bower (Harry Potter, Twilight) as sail boat Skiff.

The high-profile cast is part of HIT Entertainment’s big content push for the brand. As 2015 marks the 70th anniversary of Thomas and Friends, the company has planned a number of new releases and activities. This includes a new partnership with YouTube Kids to feature the tank engine on the kids app.

In addition, HIT Entertainment will release another CG-animated feature, Thomas & Friends: The Adventure Begins, on DVD for March 3 in the US.