Seiko Asahi, an oden shop owner, lives a happy life with her husband Kazuki, two children, and mother-in-law. Her world shatters when Kazuki disappears. A month later, she identifies a decomposed body as his, based on distinctive moles, and receives a life insurance payout. Seiko, a resilient mother, works to rebuild her family's life, supported by her strong son, Eita. However, a year later, Kazuki suddenly reappears, throwing Seiko into a vortex of confusion and doubt about the identified body and the insurance money. Meanwhile, Saharu Kuzuhara, also raising a daughter alone after her husband Yukio's disappearance, meets Seiko at a support group. United by their desire to protect their children, they uncover shocking truths behind their husbands' disappearances, leading them to make bold, irreversible decisions in this human suspense drama inspired by a real-life "body mix-up" incident.