Saki, whose husband died five years ago, lives happily with her son. Recently, her son has been acting strangely and she is worried, so she begins to investigate, thinking that he may be being bullied. Saki finally finds out that a delinquent classmate is the culprit, and calls him to persuade him to stop bullying. However, the delinquent demands Saki's body in exchange for stopping the bullying, and almost forcibly has sex with her. Saki succumbs to the threats and is raped almost every day from that day on, eventually right in front of her son...