Warner Bros. has acquired the upcoming Philip Reeve penned children's book Railhead, with Doug Liman in negotiations to direct.

The novel, which is aimed at readers between 10 and 11 years old, is set in a futuristic world where trains travel through outer space by a series of portals. The story centers on a young thief who is hired to steal an object that is much more important than he is lead to believe, which starts him on an adventure that could alter the course of the universe.

Denise Di Novi and Alison Greenspan are producing the adaptation through their Di Noi Pictures company. The book, which is scheduled for publication in the fall of 2015, is said to be filled with a number of compelling human and non-human characters.

Philip Reeve wrote the Mortal Engines and Larklight book series', the latter of which was acquired by Warner Bros. and Denise Di Novi, and is still in development.

Doug Liman signed on to direct the video game adaptation Splinter Cell last month, although it isn't clear when production will begin on Railhead, since no screenwriter has been attached yet. His next movie, Edge of Tomorrow, hits theaters on June 6.