Science teacher Ryland Grace wakes up on a spaceship with no recollection of who he is or how he got there. As his memory slowly returns, he soon discovers he must solve the riddle behind a mysterious substance that's causing the sun to die out. As details of the mission unravel, he calls on his scientific training and sheer ingenuity -- but he may not have to do it alone.

Runtime: 156 minutes
Rating: PG-13