The protagonist works as a teacher in one of the most prestigious universities. One day, a mysterious letter comes to his e-mail, with two videos attached. Opening which our hero finds video of deprivation of virginity of two of his students, Yumi and AMI. He is in despair...

On one of video AMI Kozue - the girl with a short haircut and pink hair, gets to the company of black men who long with her do not stand on ceremony and deprive of virginity on the camera. In another video, his favorite student Yumi-a girl with a beautiful figure and dark long hair, was deprived of virginity by the same guys in one of the hotel rooms. The girl slept the whole process. Who sent him these videos and why should they?