Tang Shiyue, a determined young woman from a poor family, works hard to change her destiny. Even after getting into university, her mom and brother keep exploiting her, taking everything she has. A part-time job at a boxing gym introduces her to Chu Jin, who realizes she's his junior at school. He tries to help her, but when her mom demands 100k, he misunderstands her desperation and thinks she's a gold digger. He realizes the truth when he overhears her heartbreaking phone call with her mom. That night, at the bar where Tang works, Chu Jin's cousin harasses her, but he rescues her. For the first time, he feels tenderness for this stubborn yet fragile girl. Wanting to free her from her toxic family, he offers to protect her. Tang refuses, clinging to her last shred of dignity. But when her mom threatens her again, demanding 200k, she has nowhere left to run. Chu Jin proposes a deal: he'll protect her, and she'll stay with him. The next morning, just as Tang tries to leave quietly, Chu Jin's fiancée appears at the door.
