When the mysterious “Joe of Spades” (Jo Shishido) executes one of the bosses of a powerful syndicate, his colleagues, fearing for their own lives, call on the services of assassin agency Murder Unincorporated to take care of the problem. This unique entry showcases some of the most peculiar killing tactics to ever hit Japanese cinema!

An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.