Mako married her son after being introduced to Tetsuzo, her boss at work, but in reality, she had romantic feelings for Tetsuzo. Honest and unable to refuse others, she ended up marrying without ever confessing her emotions, forcing her into the relationship of daughter-in-law and father-in-law. Unable to forget her feelings for Tetsuzo, Mako struggles in her marriage and never engages in any sexual relationship with her husband. When she is suddenly required to live with her husband's family, the family's twisted secrets come to light. The shocking revelations and inner conflicts that follow make the unfolding story intensely compelling.