Four middle-aged women—izumi, sayaka, miki, and aya—explore the reasons behind their decisions to divorce and the consequences that follow. Inspired by their close friend aya, who finds happiness with a new boyfriend after her divorce, sayaka and miki resolve to end their own marriages. Gradually, the two women awaken to romantic feelings for each other. Meanwhile, izumi, envious of aya's lover, begins a secret affair with him, only to lose both her husband and her best friend when the truth comes to light. A dramatic portrayal of tangled emotions and desires as these four women navigate life, love, and liberation after divorce.