Sister Bertrille plummets to a jungle island when the wind drops, her cornette limp and torn. She is frightened by a naked footprint and meets Carlos Ramirez. Swearing revenge, he reports that April Chance, resenting his advances, threw him off his yacht. With Carlos mostly a hindrance, Sister Bertrille uses $100 bills for tinder, sets a signal fire and cooks fish. As each sets out to find fresh water, Sister Bertrille is petrified by a mud-covered creature emerging from a tide pool, who proves to be April Chance. Sister Bertrille knows she must keep her away from Carlos, especially when she learns the yacht sank. Carlos patches up the cornette but it's too limp to fly. He greases himself with sap for a swim to the next island, attracting clouds of flies. Sister Bertrille starches her cornette into flying condition with coconut milk. Then April and Carlos meet and epithets and missiles start flying. Sister Bertrille, mired in quicksand, refuses rescue unless they make up. She is almost under when they forgive each other and Carlos remembers insurance will cover the yacht. Putting Carlos on his honor, Sister Bertrille takes off for the convent. As he reaches for April, Sister Bertrille scolds him from the sky.