A crew of astronauts is coming back from Mars after a two-year mission. Thirty days before reaching the Earth orbit all communications with Houston are abruptly cut off. Despite all the crew's efforts to restore a connection, no one on Earth responds. After a catastrophic landing in the middle of a large city, they find the place deserted. Not a single sound, or sign of life. Looking for answers, they quickly find themselves confronted with an inexplicable phenomenon and ultimately end up fighting for their lives.