Yuu, a single mother who has worked in the nightlife industry for years to raise her son Nobuo, grows increasingly exhausted from the daily grind. She receives a marriage proposal from her customer, Fukazawa, and decides to wed him. As her new married life begins, Yuu discovers an unexpected side of her husband—witnessing him abusing her son, Maakun. Feeling deep pity, she finds herself offering her own body to stop the cruelty. When Nobuo uncovers the truth, what will he do?