在这部吉尔劳姆一世喜剧片中,Magali Brunel是一个铜管乐队演奏员，Guillaume是小旅游火车的司机。他们生活在法国的一个小镇，生活很平淡。突然有一天，他继承了一个小岛成为了这个海岛的主人。
Magali plays in a brass band. Guillaume drives a small tourist train. Both spin a perfect love, they share modest dreams and their baby is about to come. But an unexpected news upsets their routine: a man appears and announces that he is Guillaume's estranged father and also reveals that Guillaume is his legitimate heir of a kingdom offshore of France and England. Guillaume and Magali start to dream of a life as monarchs, surrounded by faithful subjects in their castle, enjoying their wealth. But reality is often different to what you can imagine.
