You were selected by NASA to live in one of it's major bases on moon, it's year 3001, earth became deserted only few people lives on it, most of people know live across the solar system, everything was fine in your new home base, till one day you discover, humans that looked inhuman, you didn't know what's that, but the alarm of the base hit, explaining this is a parasite apocalypse, how are you going to get out of there alive?