Rei, who had been living harmoniously with her husband, moved into her dream high-rise apartment. She looked forward to her new life in the luxurious mansion-like building, but there were special 'rules' created by the veteran residents, the moms. Rei happened to reunite with an old classmate, Kisaki, and they became close. However, due to these rules, the two of them were torn apart. In the end, the one who laughs last is…
