It stars Tadanobu Asano as Hiroshi Takagi, a man whose girlfriend dies and who loses his memory in a car accident.

The original concept that inspired Vital was the image of medical students making sketches during a dissection.

[1] Hiroshi (Tadanobu Asano) wakes up in a hospital room and realizes that he was in a serious car accident that caused the death of his girlfriend, Ryoko (Nami Tsukamoto), as well as the loss of his memory.

One of his medical school classmates, Ikumi (Kiki), soon becomes infatuated with Hiroshi, although he does not return her interests initially.

During this time, Hiroshi engages in a relationship with his classmate Ikumi, that helps him recall further memories of his ex-girlfriend.