Overtaken by work, a married couple returns home after a long absence—their last visit was for the father's funeral. This time, the mother doesn't scold them for staying away, but warmly welcomes them back. "I'm glad you're both doing well," she says with a smile, bustling in the kitchen. Watching her move, both husband and wife sense an unexpected sensuality in her demeanor—an alluring charm radiating from her body language that draws their attention. That night, with her mother present, the wife seems hesitant and keeps her distance from her husband. The next day, an old neighbor drops by the mother's house, sparking curiosity in the couple. They secretly watch, stunned as the man and the mother begin kissing—her reaction shifting noticeably. At first reluctant, she gradually becomes interested, even joyfully pressing her face against his crotch. Witnessing this, the husband can no longer suppress his desire and feels an overwhelming urge to touch his mother. Something inside him has changed—he is now consumed by an uncontrollable impulse to have her himself.