有一天父亲(香川照之饰)突然来找阿笙(瑛太饰),告诉他有个素未谋面的姑姑死了,叫他去收拾下姑姑的房子。在河边的破烂小屋里,阿笙渐渐开始了解父亲口中的姑姑,到底有着怎样的一生。小时候的姑姑川尻松子(中谷美纪饰)经常做着白雪公主似的美梦,她后来成为一名安分的中学教师,却因百口莫辩的误会被辞退了,之后和一作家同居,作家却因为太爱她而选择自杀,死前留下遗言:生而为人对不起。这件事对松子打击
Nan-ja waves around a shaving knife in a blonde wig, black stockings and miniskirt when the sun goes down. Her aim is to slit the throats of men who have betrayed their women and made them cry. However, her true goal is to take revenge on Gil-soo, Jae-goo and Man-sik who made her mother bite down on bread while they raped her to death. Then one day, Nan-ja finds one of the men she's looking for through a heartbroken woman who was going to kill herself. Nan-ja kidnaps him and drags him to the basement of her hideout where she makes him play the trumpet. Nan-ja dances to the sound of the trumpet until she slits his throat and watch the blood spurt out from the trumpet. Her revenge has begun.