Plot: Mykelti Williamson and Justin Lazard are a pair of astronauts who make the first successful manned mission to Mars. Lazard's character gets infected by an alien and slowly begins to mutate. When they get back to Earth all he has on his mind is to have sex with Henstridge!
Alternative Plot: Having just returned from a mission to Mars, Commander Ross (Justin Lazard) isn't exactly himself. He's slowly becoming a terrifying alien entity with one goal -- to procreate with human women! When countless women suffer gruesome deaths after bearing half-alien offspring, scientist Laura Baker (Marg Helgenberger) and hired assassin Press Lennox (Michael Madsen) use Eve (Natasha Henstridge), a more tempered alien clone, to find Ross and his brood. Before long Eve escapes to mate with Ross.
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