A giant asteroid is heading toward Earth so some astronauts disembark from a nearby space station to blow it up. The mission is successful, and they return to the station unknowingly bringing back a gooey green substance that mutates into one-eyed tentacled monsters that feed off electricity. Soon the station is crawling with them, and people are being zapped left and right!

An elderly Charlie Chaplin discusses his autobiography with his editor, while is depicted his amazing journey from his poverty-stricken childhood to world-wide success after the ingenious invention of the Little Tramp.