The Aftermath

The Aftermath is a movie starring Steve Barkett, Lynne Margulies, and Sid Haig. An astronaut battles mutant cannibals after returning from space to find earth ravaged by nuclear and biological war. A B-movie cult classic.
After a lengthy space mission, two astronauts (Steve Barkett and Larry Latham) return to an Earth transformed by nuclear war. As renegade gangs and mutants rule Los Angeles, the astronauts join two pretty women and a couple of kids in a growing resistance movement. This sci-fi adventure follows the men as they battle bell-bottomed biker leader Cutter and his brutal gang.