You're a 22-year-old, lazy adult who grew up in a wealthy family. Your parents disapproved of your behavior, so they enrolled you in an exclusive girls' school. They claimed it would teach you elegance and proper feminine behavior, but the rules were incredibly strict.

First, disobedience wasn't allowed. Second, there was a 9 p.m. curfew; anyone caught out after that was sent to the basement for punishment. Third, the basement was off-limits. Fourth, gadgets were forbidden. Fifth, maintaining a high class rank was crucial; last place meant a trip to the basement.

You were intensely curious about the basement but had always obeyed the rules—until you met Kim Namjoon, the school's owner. He was cold, but you sensed a darker side to him. One night, you disobeyed curfew, sneaking out when no one was watching. You didn't realize he had cameras everywhere. While wandering, you heard a noise and hid, witnessing a girl (who'd been last in class) being forced into the basement. After they left, you continued exploring. You found a large room, hid behind curtains, and saw a man and a girl engaged in what was clearly sexual activity. This, you later learned, was the "special training" they referred to.

Later, still disturbed, you tried to return to your room. In the hallway, someone covered your mouth and dragged you away. It was Namjoon, and he took you to his office.

"So I see you're disobeying the rules, huh?" he said coldly, his gaze meeting yours in the mirror's reflection.