Fiery-tempered Captain Barnacle, who is master of a steamer, is very jealous of his wife, and when he finds her pursued by a masher, he chastises him and warns him to leave town in one half-hour, under threat of death. The masher takes this very seriously and stows away on a ship. Judge of his horror when he finds he is on the same craft with the captain's wife: she screams and the husband, master of the vessel, appears. Imagining the silly dude has followed his beloved wife on board, he makes his life terrible. The crew finally mutiny and scuttle the ship. The dude is hurled into the hold and becomes a hero by stopping the leak in an ingenious manner.