陌生男子自稱罪犯,找上度假中的警探貝拉米。貝拉米一面求證男子的話,也探訪他的妻子與情婦;另方面讓他頭痛不已的弟弟也來會合。貝拉米原本不以為意,直到看見弟弟與妻子存在某種曖昧…As every year, chief inspector Paul Bellamy spends a few days with his wife Françoise in the family house in Nîmes. Jacques, Paul's stepbrother, turns up unawares, which is bad news since the fellow is an alcoholic good for nothing. Also annoying is this stranger at bay who asks Bellamy for protection. Farewell peaceful holiday!