Secretary Serina, who works in the director's office of a general hospital, is an intelligent and beautiful woman. Her boss, the hospital director, exploits her masochistic tendencies, turning her into his daily plaything. One day, surgeon AOI. is raped, and footage of the assault is used as blackmail. Who is behind this scheme, and for what purpose? The fates of Serina and AOI. begin to spiral out of control...