Ji Young-Sun, having given up her daughter Lee Ja-Kyung at a young age, later remarries and starts a new family. However, her life is upended when her husband dies, leaving her with her stepson Gu Wang-Mo and biological daughter Gu Seul-Ha. Meanwhile, Ja-Kyung, now an adult, has faced a life of abandonment and loneliness after being orphaned once more by the death of her foster parents. With little connection to her past, she struggles to find love and belonging in a world that has repeatedly rejected her. When Young-Sun eventually tracks down Ja-Kyung, she is determined to bring her daughter back into her life. However, in her effort to keep Ja-Kyung close, Young-Sun attempts to match her with Wang-Mo, her own stepson. The revelation of their complex family dynamics and the emotional consequences of Young-Sun’s past decisions lead to a web of tension, forcing Ja-Kyung to navigate the delicate line between family, love, and betrayal.