After her husband suddenly disappeared, leaving behind debts, Yuko Kuremachi struggled to raise her son, Masao, and ultimately had no choice but to place him in a care facility. Twenty years have passed since then, and Yuko has finally paid off all the debts. Every day, she thinks deeply about Masao. One day, wishing to reunite with him, she comes up with a bold idea—exposing her big breasts, something Masao had always loved. Hoping to remind him of his mother's presence, she believes this act might spark something within him and reconnect their severed bond.