Karen Tojo plays Ichika, a married woman who leads a quiet life helping her husband run a cafe, while also caring for his child from a previous relationship. However, her stepson Makoto harbors deep feelings for her and repeatedly tries to express his uncontrollable desire. To diffuse the tension, Ichika responds with blowjobs, but Makoto, unable to let go, eventually leaves home. A year later, after losing his job, Makoto returns to live with them again. Ichika wonders if they can coexist as a family, yet soon faces a new, complicated dynamic between them. But just before things progress further, an unexpected tragedy strikes.