A crew of astronauts - including Olivia Williams' prickly scientist and Liev Shreiber's systems officer - are ready to come home after an unsuccessful mission to collect specimens on Mars. But just as they are about to leave, one of the team discovers a new form of life. Or, more accurately, death... Suit up for an outbreak of cosmic suspense.
In the not-so-distant future, mankind has built an outpost on Mars where an ongoing mission to investigate and research the Red Planet is taking place.
The latest crew are ending a six month stint, but with just a day to go before they get a ride back to the mothership, the atmosphere is tense and the crew fatigued.
One particular scientist, Marko (Kostic), has just discovered a sample that points to the existence of life on Mars, but rather than spread the word, he comes up with an excuse to visit the site of the sample to check his research.
However, while he's investigating, an accident leads to Marko's apparent death, and the sample he picked up may well be quite the opposite of life.