A businessman on a trip to Tokyo ends up in the middle of a centuries old feud between a criminal Ninja cult and a Samurai when he witnesses a assassination performed by the Ninja-cult leader.

The U.S. government, eager to protect the nation’s avacado supplies, recruits feminist professor Margo Hunt to make contact with the Piranha Women, an all-female tribe who believe men are only good as a source of food. Accompanying Dr. Hunt on her trip are Jim, a guide of questionable competence, and Bunny, a student of unquestionable incompetence.