Elena, who remarried and lives with her son Kentaro, grows concerned about him constantly spending time on his computer. One day, she discovers hidden camera images of herself on his PC. Kentaro has been uploading them to a website called "Mother Submission.com," enjoying the ratings and comments from online users. Driven by the thrill, his actions escalate to filming videos. As the number of uploads decreases, Kentaro seeks new extremes—eventually resorting to live-streaming Elena having sex with other men.