Moe, Larry and Curly Joe are garage mechanics trying to change a flat tire on a robber's getaway car while he's out committing burglaries.

Two escaped convicts are found hiding in a rocket ship built by a renegade inventor, who forces them to become the crew for a trip to the Moon. Also on board, as inadvertent stowaways, are his assistant and his secretary; and none of them are aware that the inventor is actually a Lunarian explorer sent to Earth by the dying Lunar civilization.

Employed by Bungling Brothers Circus, The Three Stooges are sent to the jungle in search of a wild boy. They soon realize all the hoopla is centered around a hippie!