Astronauts Mykelti Williamson and Justin Lazard achieve a historic milestone with their successful mission to Mars, but their journey takes a terrifying turn when Lazard's character becomes infected by an extraterrestrial organism, leading to a grotesque transformation. Upon their return to Earth, the mutated Lazard is consumed by an insatiable desire to mate with actress Natasha Henstridge.

Species II
When an astronaut contaminated with extraterrestrial DNA returns to Earth, a gruesome metamorphosis sets in, wreaking havoc on a worldwide scale.