One afternoon, while waiting for her husband to return, married woman Misaki suddenly receives a letter with no return address. The message reads, "Hello, baby..."—a chilling greeting. As she reads it, a masked man suddenly attacks her, and she loses consciousness. When Misaki regains her senses, she realizes the man's massive cock is deeply buried inside her. She tries to resist, but the man laughs cruelly and mercilessly begins creampie after creampie without hesitation. It's her ovulation day. Overwhelmed by the man's relentless desire, Misaki is forcibly impregnated in a deranged, pleasureless rape—her body invaded against her will by a twisted predator obsessed solely with breeding. A brutal, faceless rapist targets married women only on their fertile days, leaving them broken and pregnant in a nightmare of creampie violation.