Zoe (Anna Kendrick), David (Daniel Dae Kim), and Marina Barnett (Toni Collette) launch into space on a two year trip to Mars. Less than a day after takeoff, a 'Stowaway', Michael (Shamier Anderson) is found in an access panel and with his discovery, the life support systems begin failing. It becomes a race against time to find a way to survive aboard a space craft without enough oxygen for four people.

The acting is fairly well done and the script is predictable, but entertaining. The flow is solid and the ending is satisfying, but a lot of questions are raised about the validity of the science around the film. Why do certain plot points need to happen? This film feels a lot like 'Gravity' (2013), in that it's enjoyable if you don't think too much about it.

Worth a once over.