A married woman named Ai who wants a child. On her ovulation day, when the pregnancy rate starts to rise, she receives a letter: 'Congratulations on your pregnancy'... Suddenly, a masked man appears and pins Ai down, thrusting his erect penis deep into her vagina and ejaculating. Unbeknownst to her, surveillance cameras have been watching every aspect of her life. Without realizing it, her body begins to respond to the repeated rapist's ejaculations. Eventually, the married woman finds herself pregnant with a child from an unknown man...
