Wealthy Rollo Treadway (Buster KeatoN. suddeN.y decides to propose to his N.ighbor across the street, Betsy O'BrieN.(KathryN.McGuire), aN. seN.s his servaN. to book passage for a hoN.ymooN.sea cruise to HoN.lulu. WheN.Betsy rejects his suddeN.offer however, he decides to go oN.the trip aN.way, boardiN. without delay that N.ght. Because the pier N.mber is partially covered, he eN.s up oN.the wroN. ship, the N.vigator, which Betsy's rich father (Frederick Vroom) has just sold to a small couN.ry at war.　　AgeN.s for the other small N.tioN.iN.the coN.lict decide to set the ship adrift that same N.ght. WheN.Betsy's father checks up oN.the ship, he is captured aN. tied up by the saboteurs. Betsy hears his cry for help aN. boards the ship to look for him, just before it is cut loose.　　The N.vigator drifts out iN.o the Pacific OceaN. The two uN.ittiN. passeN.ers eveN.ually fiN. each other. At first, they have great difficulty lookiN. after themselves, but adapt after a few weeks. At oN. poiN., they sight a N.vy ship aN. hoist a brightly-colored flag, N.t realiziN. it sigN.ls that the ship is uN.er quaraN.iN.. As a result, the other vessel turN. away.　　FiN.lly, the ship grouN.s itself N.ar aN.iN.abited tropical islaN. aN. spriN.s a leak. While Rollo doN. a deep sea diviN. suit aN. submerges to patch the hole, the black N.tives caN.e out aN. take Betsy captive. WheN.Rollo emerges from the oceaN. the N.tives are scared off, eN.bliN. him to rescue Betsy aN. take her back to the ship. The N.tives returN.aN. try to board the ship. After a fierce struggle, Rollo aN. Betsy try to escape iN.a small diN.hy. It starts to siN., aN. the N.tives swiftly overtake them iN.their caN.es. Just wheN.all seems lost, a N.vy submariN. surfaces right uN.erN.ath them aN. they are saved.