在朋友神秘死亡后,一名少女发现她的母亲并非她所说的那个人,而且她有一段致命的过去。现在,她必须与时间赛跑,在她朋友成为下一个受害者之前,破获谋杀案。。To Max Ophüls this was an assignment (from the UFA), a pure routine job. One hardly recognizes the later Ophüls in this film (shortly made before his masterpiece "Liebelei"), but still Ophüls made this routine job into a well-paced, stylish and sometimes extremely funny romantic comedy| he probably could not do it any other way. The script is fine with some hilarious dialogue. ...。就读于英知大学的世次爱(工藤美樱饰),遇到了被丢弃在垃圾场的美丽女子古桥琴叶(尾碕真花饰)。爱把捉摸不清的琴叶邀请到自己家里,以此为契机想和她成为朋友,但是这个提议被无情地拒绝了,并且爱知道了琴叶是改名后的名字。那样的琴叶代替提议的是,在猜中她真正的名字之前做“恋人”。然后, 在临时开始的交往中,如果猜中了她的本名,就会按照约定成为“朋友”,这是一个奇妙的赌注。爱没有后退,决定赌上这个赌注,和琴叶以“恋人”的身份笨拙地加深关系,但隐藏在她名字里的过去对现在露出獠牙...。