Ripley (Sigourney Weaver) crash lands on Fury 161, an old forge-turned prison now populated with double-Y chromosome sex offenders. She is the only survivor from the Sulaco and has been impregnated with a queen alien. A second facehugger impregnates a hapless dog that gives berth to an alien that scrambles around on all fours and eliminates the prison population in a variety of messy ways. A climactic battle between prisoner Dillon (Charles S. Dutton) results in the alien being doused with hot metal. When Ripley turns on the sprinklers the cold water causes the alien to shatter. The company sends the real Bishop (Lance Henriksen) to try to convince Ripley to allow them to extract the Alien queen, but Ripley commits suicide by jumping into one of the furnaces.
Thanks, Evil Ed and Alex L!

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