Mayu (Shunka Ayami) lives with her husband, an office worker, and her father-in-law, who has dementia. Ikushima (single), who lives in the apartment across the street, can't get up and is living a day-to-day life. One day, Ikushima finds a beautiful married woman (Mayu) who throws an old fan in the trash. He took the fan back to his room, repaired it, and started using it. After that, he gradually begins to peek into the life of Mayu, who lives across the street. One day, he secretly follows her when she goes out, and arrives at a suspicious sex shop...

被大财阀的儿子·浜崎杀死妻子的男人发誓报复，用钱买下真由美这个女人的命。男人为暗杀浜崎，把她训练成刺客，严酷的特别射击和格斗术，并把枪的零件埋在她的体内。一旦她取出并装好枪，几分钟后她就会失血而死，所以她必须尽快地完成刺杀……