Rin returns home early to find her husband Yuma with another woman, Riko, who is the heiress of a powerful family. Yuma coldly demands a divorce, humiliating Rin by comparing her to Riko and blaming her low status as a hospital cleaner. His mother pressures Rin to sign the papers immediately, citing Riko's pregnancy as a reason to cut Rin out. Despite being insulted and offered hush money to leave, Rin refuses to give up her assets, setting the stage for a fierce conflict over loyalty, betrayal, and power within the family.]