After seeing a dazzling white light from an Iraqi battlefield, injured American soldier Miles Willis awakens to find himself imprisoned in an enigmatic cube with only his fighting gear. The cube starts to alter, causing abrupt changes in gravity and the apparition of mysterious writing on the walls, which only serves to worsen his already precarious predicament. A voice on the other end of Miles’ satellite phone, claiming to be a prisoner in a similar location, provides him with a lifeline just as he starts to doubt his own sanity. These two strangers must work together to outsmart their captors and solve this deadly conundrum as the walls close in.