In a rundown area of Buenos Aires, at the dawn of the 1980s, Adrian LeDuc owns both a struggling movie theater and a shabby apartment building filled with eccentric, squabbling tenants. To make ends meet, Adrian takes in a roommate, Jack Carney, but soon begins to suspect that the quiet American is responsible for a series of political assassinations that are rocking the city.

The only survivor of the Nostromo, Ripley is discovered in deep sleep half a century later by a salvage ship. When she is taken back to Earth, she learns that a human colony was founded on the same planet where the aliens were first found. After contact with the colony is lost, she finds herself sent back to the planet along with a team of warriors bent on destroying the alien menace forever, and saving any survivors -- if any remain.

In the winter of 1982, a twelve-man research team at a remote Antarctic research station discovers an alien buried in the snow for over 100,000 years. Soon unfrozen, the form-changing creature wreaks havoc, creates terror... and becomes one of them.