Mako Morishita's character is a married woman who constantly fails at everything and is scolded daily by her husband. Having lost her self-confidence, she has become a powerless wife who meekly obeys his words. The only praise she ever receives is directed at her sensitive private parts. One day, her husband brings home his junior colleague from work and orders Mako to perform masturbation in front of them. She ends up engaging in intercourse right there in front of her husband. Her husband watches as another man brings her pleasure.