One night, Kasumi accidentally witnesses intimacy between her husband and daughter. This comes as a shock to a woman who is accustomed to valuing family values and home. Trying to save her family and pretending that she didn’t see anything, every day she feels more and more superfluous and unnecessary. A neighbor intervenes in the situation, who has long had his eye on Kasumi’s body. He intends to show her stupid husband that married women are always in demand....