Jacob Tremblay, Christopher Lloyd, Kenan Thompson and Mel Brooks have been cast as the voices in Lani Pixels’ untitled 3D animated feature that will mark the directorial debut of Kim Pagel, who also scripted the family story.

The film will follow Patrick and Susan as they attempt to rescue their grandfather, Mr. Campbell, from supernatural forces that have invaded his isolated island. Guided by Jack, a charming Irish rogue, the siblings end up on a dangerous journey filled with magic and mystery.

Thomas Pagel, who co-founded Lani Pixels with Kim Pagel, is producing the feature, with Jason Mirch co-producing. Verité Entertainment’s René Veilleux and Donald Roman Lopez are associate producing.

“It is an honor to be working with such a talented and dynamic cast on this project,” said Kim Pagel. “While this has been a passion project for many years, the themes of family unity and courage in the face of adversity are particularly important these days.”

Lani Pixels was founded by Kim Pagel and his son, Thomas, in 2000, initially, producing 3D animation for several of the largest companies in Denmark. The company developed and produced Spellbreaker, the first “4D” animated movie in Denmark, which premiered spring 2006 in Legoland parks around the world.

Tremblay starred in Room and is onscreen in Lionsgate’s Wonder. Upcoming is The Death and Life of John F. Donovan, alongside Kit Harrington, Jessica Chastain and Natalie Portman for eOne. He recently completed production on Shane Black’s The Predator.

Lloyd, of course, was beloved as “Doc” Brown in the Back to the Future trilogy and most recently was seen in Zach Braff’s Going in Style for Warner Bros.

Thompson is a cast member of NBC’s Saturday Night Live and is in production on Dylan Brown’s Amusement Park alongside Mila Kunis, Jennifer Garner and Matthew Broderick for Paramount Pictures.

Brooks is Brooks (The Producers, Young Frankenstein, Blazing Saddles, Silent Movie, High Anxiety and Robin Hood: Men in Tights). He is filming Sony Pictures’ Hotel Transylvania 3: Summer Vacation.

Tremblay and Thompson are repped by UTA, Lloyd by the Gersh Agency, Brooks by CAA and DPN, and Lani Pixels by attorney Michael E. Morales.