Tom Cat is a mascot aboard a cruise ship and is warned by the captain that he will be replaced by another mascot if he finds a mouse on board the ship. Jerry Mouse tries to board the ship, but is kicked out by Tom and squashed by a coconut. Jerry then ties a rope to board on, but is attacked by Tom, who snaps the rope, which flattens Jerry against a bollard. Jerry then tries to pole vault in through the window, but fails when Tom closes it. Jerry finally boards the ship by grabbing the anchor. Jerry ties Tom's tail to a lifebuoy ring and makes a fake call for help, causing Tom to throw the ring and fall off the ship.