 As a ship s crew is on shore leave, seadog Pluto is left to stand watch. He sees a threatening shape, but it turns out to be a cache of bones. He grabs one and settles in contentedly. A rat sneaks on, and Pluto springs into action. The rat toys with him, until it finds the officer s mess. He bribes Pluto, until he hears an officer approaching. The rat hides, and Pluto gets thrown in the brig, while the rat sneaks off with his sandwich. But Pluto gets even.