Cecil and Anton are brothers, but they're as different as port and starboard. Cecil thirsts for seafaring adventure as he roams the docks of his harborside home, taking day trips on fishing boats. Anton prefers listening to the sailors' shanties at the town saloon. But one day when Anton goes to port, he's taken to be a ratter on a ship bound for the high seas. Cecil boards another ship in hopes of finding Anton, but what begins as a rescue mission turns into a pair of high-seas adventures.