Beautiful sisters who work as nurses.Yukine (older sister) senses something strange about Yura (her younger sister), whom she hasn't seen in a long time, and transfers to the hospital where her younger sister works in order to investigate the cause.One day, at a hospital late at night, I witnessed her younger sister, who had been turned into a sex slave, sucking the cocks of patients and being raped.Wanting to help her sister, he approached the darkness of the hospital with the help of her senior nurse, Yoshioka.