This French family film is filled with action, animals, adventure, and suspense. The story is told from a child's viewpoint. One day, while playing in his secret tree house in the forest, 11-year old Antoine spies upon bank robbers stashing 40-million francs worth of loot. One of the robbers is the father of his newest best friend Lisa, a 10-year old Canadian visitor. Not wanting to rat on her father, Antoine instead moves the money to a different spot. Neither he, nor Lisa have a lot of respect for their frequently absent fathers. They find adults to be inherently hypocritical. Both kids do share a love of animals though. Together, they decide to run away to Biarritz, a resort town, and start spending a little money. The thieves are livid when they discover their stash is missing, particularly Max, and they try, unsuccessfully to catch the kids. Antoine is assisted by his muscular governess Clemence as he and Lisa suffer through numerous narrow escapes while spending their ill-gotten gain. - Sandra Brennan, All Movie Guide
泽木龙一（堤真一饰）是一名邮政投递员，每天重复着索然无味的机械工作。一日，他在工作中遇到了高中时代的同学野口。野口是黑社会的一员，他告诉龙一，这样的生活为自己带来心跳的感觉。龙一回到家中，野口的话让他难以释怀，他趁着醉意拆阅了他人的信件。其中有一封信是寄给因患癌症而住院的女孩小夜子（远山景织子饰）。次日，龙一前往医院探察，对小夜子一见钟情，并在医院里结识了正在等待全国杀手大赛选拔通知的杀手（大杉涟饰）。不久于人世的小夜子与龙一相约外出散心，幸福开心。但是警察们早已盯上了龙一，并认为他是个罪犯。阴差阳错的故事会如何收尾呢？
