MARCO MACACO works as a beach officer, but spends most of his time trying to win the heart of the beautiful LULU. One day Marco's rival, CARLO, builds a gigantic monkey-shaped casino right on Marco's beach. Lulu is fascinated by the charming Carlo. Jealously Marco investigates the strange casino and discovers that Carlo will take over the island and force Lulu to marry him! When Marco tries to arrest Carlo a problem rises. Literally from the ground. Because the casino is in fact a giant robot.