During the last summer vacation of their high school lives, Akira Takizawa, Michio Oshima, and Osamu Kobayashi, who still haven't decided on their future careers, gather in a classroom to take supplementary lessons. Natsuko Izumi appears there, who has just been assigned to the new position due to the homeroom teacher being on maternity leave. Natsuko, who coolly and dispassionately serves as the substitute teacher, has a past in which she had to keep her distance from her students. Meanwhile, Akira was forced to repeat the year after committing a violent act to save his classmate Shiho Matsuyama from being raped by the head teacher Yamashita. One day, Yamashita accidentally finds out about Natsuko's past, and he threatens her, relentlessly playing with and abusing her. Having caught a glimpse of their relationship, Akira is confused but is drawn to Natsuko. Shiho is also heartbroken by her feelings for Akira. However, Yamashita's plan is carried out once again...

川野瑞希是个可爱文静的初中女孩。对她来说，最大的幸福就是和父亲修一聊天。看着滔滔不绝的瑞希，修一总会露出开心而温柔的表情。与之相对，母亲枫却对瑞希却很冷淡。 表妹葵突然搬到川野家寄住。瑞希起先不太习惯，但渐渐地和枫成了好朋友。枫对瑞希的冷淡态度让葵觉得很奇怪。她并不知道，这背后隐藏着惊人的真相……

A mysterious female spy is recruited to infiltrate the Japanese underworld and gather evidence for a clandestine secretive branch of the Tokyo Police Department.

2005 film directed by Riki Okamura