A cop chasing after a female cop killer, but then gets caught in a dark web of departmental corruption.

Downtown Los Angeles. It is a shadowy town filled with drug addicts, homeless people, and others who have lost their homes. Jiro, tired of his killing spree, is also addicted to drugs and drifts through his days like a corpse. Jiro's foggy mind begins to flash with blood-soaked reminiscences...

Jiro's only target is a mysterious assassin. Faced with an enemy whose true identity is unknown, Yuki decides to become a decoy herself. The assassin relentlessly pursues Yuki, and Jiro also pursues the assassin. Killing after killing, they end up at the destination, where an unexpected person is waiting for them.

Jiro has avenged the murder of his mentor and stands alone as an assassin. He finds a new agent and makes a contract with him. However, the ghost of someone whom he once killed, appears...

Jiro is a rookie hitman. One day, his mentor dies a brutal death. Furthermore, the execution scene was filmed and leaked as a murder video. Jiro is furious and decides to take revenge. He sets out to track down the mastermind and steal the original video.

Jiro, a freelancer working at a delivery pizza shop, witnesses the brilliant killing techniques of professional assassin Nejime at a gangster's office where he makes deliveries. Jiro rescues the wounded Nejime and volunteers to become his apprentice. From that day on, Jiro learns the art of killing in a dog eats dog world.

Two Chinese girls become prostitutes in Tokyo.

广濑未知(松岛菜菜子 饰)对教师一职失去热情，而光(泷泽秀明 饰) 被母亲镜子(黑木瞳 饰)严格要求继承医院家业，他们俩人第一次相遇就是在彼此生活都陷入绝境时。未知当时只想与未婚夫结婚，以逃避学校的一切，一心辞去教师的工作。而就在这时，光转入了未知的班上，光当时正想逃离母亲镜子的束缚，为此苦恼不已。纯洁得似乎一碰即碎的光，强烈地吸引著未知，而光对未知也怀著同样的情愫。未知在俩人相识之初，由于自己与光是教师与学生的关系，她只能拼命地压抑著自己的爱意，但是光对未知毫无保留、勇敢的爱情，让未知再也无法沉默，心中的疑虑及恐惧一扫而空。但是来自各界的压力不断，他们自己的相互磨合又总是不合时宜地发生，两人在艰难的经历和环境中，历经了多次的分分合合。这段惊世骇俗的师生恋情是否能被被周围的人认可？最终他们是否可以走向了幸福？