Mankind's earliest settlers on the Martian frontier do what they must to survive the cosmic elements and each other in this science-fiction thrill ride. When strangers appear in the surrounding hills and attempt to run them off, nine-year-old Remmy (Brooklynn Prince) catches a glimpse of the desperate reality her parents, Reza (Jonny Lee Miller) and Ilsa (Sofia Boutella), have tried so hard to keep from her.