The story is about a person who got partial brain transplant to supplant the damaged part of his brain that was shot during a robbery.

Junichi (Hiroshi Tamaki) is a common worker at a plant who's hobby is painting. One day while visiting a real estate agent's office, he gets involved in a robbery and gets his head shot. While in a coma for 5 weeks, his damaged brain was supplanted by another person's. Junichi has a girlfriend Megumi (Yu Aoi) who loved each other, but Junichi gradually finds himself not being able to love Megumi. His behavior starts to become violent and even starts to have desires to kill other people. Who is the owner of the brain that was donated to Junichi ?

Intriguing story about a man who's life is completely changed by his physical transformation, but it is not a Jykill and Hyde type of story, but a story of a very normal man trying to find out about the mystery of why he experiences what he experiences, and tries to regain his life back. He also finds much love around him that supports him through his trying times.

This is a first rate science fiction + every day drama that should be rated up there with the likes of H G Well's novel. Asian movies have truly come of its age, and these hidden gems should be taken more seriously by the western viewers. This movie surpasses many of the crap drama and science fiction that comes out of Hollywood these days.