After losing his wife, elderly father-in-law Kameo suffers from illness and loneliness. His son, concerned for his isolated father, asks his wife Nene to care for him. He also requests that she teach Kameo how to use social media. As a result, Kameo begins uploading videos of Nene's big tits, seeking high ratings and attention. The videos unexpectedly go viral, satisfying Kameo's loneliness and Nene's craving for validation. Though both believe they should not cross the line, the content grows increasingly extreme, broadcasting erotic scenes of the busty daughter-in-law and caregiving to the world. From mouth-to-mouth feeding, blowjob sessions during bath care, it eventually escalates further—transforming them into essential sexual partners for each other.