Simone was forced to betray sick Kael seven years ago, causing his collapse. His mother claimed their son, while Simone raised their daughter, who shares Kael's weak heart. Years later, a schoolyard fight brings her face-to-face with CEO Kael. She sees her lost son but stays silent. When her daughter's life hangs in the balance, Kael makes her plead—but quietly moves heaven and earth to help. All wounds heal in the end.