Musty visits the seashore, and takes upon himself the duty of sweeping the tide back from the beach. Suddenly a golden head is thrust up through the water and Musty decides the owner of this crown of glory must be either a mermaid or Nanette Spellerman. It proves to be the former, and Musty starts a flirtation. This is interrupted by the appearance of a fairy tramp, who magically clothes Musty in a sailors costume and causes a wonderful vessel sort of a cross between a Chinese junk and a hybrid galleon one-lunged motorboat, to appear. Musty assumes command of the ship. He visits the various decks and finally the engine room, where he finds the motive power is furnished by the engineer, who operates a sewing machine to which a crankshaft is attached. Musty goes on to the hold and nearly sinks the ship by opening a trap in the bottom of the craft. The Merry Sunshine Society takes its annual outing aboard Captain Musty’s craft. Musty lights a fire in the galley stove to prepare tea, and one of the Merry Sunshiners on deck covers up the funnel to keep from breathing the smoke. The fumes are driven back into the galley, but Musty solves the difficulty with his magic smoke consumer. When those on deck complain that the party is short one cup and saucer, Musty dives overboard, comes up through the bottom of the ship and appears on deck with the crockery while the astonished sun culters are still looking over the rail waiting for him to come up. A moment later he suddenly bursts through a hatchway, upsetting one of his passengers and precipitating him into the briny. In trying to rescue his victim, Musty himself goes overboard and a general mix-up follows. The Sunshiners decide they have enough of Musty’s cruiser, and while our hero is being dried by a blow-torch in the hands of the engineer, hail a passing rowboat and are restored to terra firma. Undismayed, Musty decides to fish. He seats himself comfortably on deck and casts his line. Hardly has it touched the water when the bait is seized and swallowed, hook and all, by a tremendous goofus fish. The sea monster starts to run. Musty holds on and the ship is dragged out to sea at a terrific rate of speed. The astounded engineer puts the reverse action on his sewing machine without result, the dreadnought continues on its wild dash toward the coast of Africa. Finally the craft runs upon a rock and Musty is thrown into the water. The last we see of him he is still being dragged headlong through the water.