Azusa Itagaki, a popular net idol, marries her former mentor—an older man with a son from a previous relationship, creating emotional tension within the family. Her marriage is filled with complex feelings, especially as her husband grows jealous of her interactions with online fans, yet they share passionate and satisfying sex at night. Sensing the presence of her stepson heightens the excitement, further fueling her husband's possessive desires and deepening their intimate connection. Overcome with arousal, Azusa seduces her stepson, leading to an intense threesome. The experience culminates in an overwhelming, blissful climax for her.