Six months have passed since Rieko lost her husband. Thanks to her daughter and son-in-law offering to live together, she has gradually begun healing her emotional wounds. However, in the process, her suppressed desires start to resurface, leaving her once again tormented by unfulfilled longing. Witnessing her situation closely, her son-in-law becomes irresistibly drawn to Rieko's mature allure. Day after day, they continue living under the same roof, sharing the same space. As their uncontrollable emotions grow, the forbidden attraction between them turns from a mistake into an inevitable reality.