On her way home from school, a girl finds a mobile phone lying in some bushes. This simple act of kindness marks the beginning of a horrific ordeal awaiting her. The person she returns the phone to turns out to be a man perfectly deserving of the label pervert. After delivering the phone to his apartment, she is slipped an aphrodisiac without her knowledge, losing consciousness and being taken advantage of. With her pure mind and body, she is helplessly consumed by the man's desires, her body reacting hypersensitively and forced to respond to his every demand. Exploiting her innocence, he subjects her to brutal and cruel torture and training. Forced beyond her limits, she undergoes relentless, extreme acts until her mind and body gradually break down, walking a path from which there is no return.