When her husband Takeshi's company isn't doing well and he's in debt, his wife Rena decides to go back to her parents' house for advice. It's been a long time since Rena last visited her hometown. Her mother, Juri, divorced a long time ago and now lives with her new husband, Kenichi, who is also Rena's stepfather, and he immediately accepts her request for advice. However, Kenichi begins to show his true colors to Rena as she spends some time at his parents' house. Rena is unable to refuse and is embraced by Kenichi. Juri becomes aware of the obscene relationship between Kenichi and Rena...