Five months into a desperate mission to Saturn, engineer Paul Tremaine is drowning in petty squabbles and simmering resentment aboard a dilapidated freighter. The air itself feels suffocating, both from the cramped quarters and the growing tension between crew and scientists. When a seemingly minor dispute over breakfast spirals into something far more sinister, Paul finds himself caught in a deadly game of suspicion and sabotage.
As vital hydroponics begin to fail and a series of shocking events unfold, it becomes clear that someone aboard is deliberately trying to doom them all. Trapped in the cold vacuum of space with dwindling resources and a growing sense of paranoia, Paul must unravel the truth before their last breath.