![I.S.S.](https://image.tmdb.org/t/p/w185/blPAS2HZcOGLTREbUeNIWmz0B6f.jpg)
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Mizuki, a female doctor working at a certain hospital, is immersed in the treatment of Aimi, a high school girl infected with SDX (Viral and Sexually Sensitive Disease). During the treatment, Mizuki realizes that SDX is artificially made. However, at that moment, Dr. Nakamatsu appears and begins a desperate game of survival.