After amusements working in a restaurant, Charlie uses his lunch break to go roller skating. Mr. Stout makes advances toward the unwilling Edna (whose father and Mrs. Stout had earlier carried on in the restaurant). After a roller skate ballet, Charlie (now as Sir Cecil Seltzer) is invited to a party at Edna's. All the "couples", including a new partner for Mr. Stout. show up....
艾米蒂岛是一个旅游度假胜地，有大批的游客来这里游泳。然而，大白鲨的出现却改变了这一切。事故从一对情侣开始，他们下海游泳，女的不幸成为了第一个牺牲者，支离破碎的尸体令人惨不忍睹。当地官员却不愿意封场调查，他们怕影响旅游收入，于是请来了生物学家布朗（理查德•德莱福斯 Richard Dreyfuss 饰）。...
