Cleaner Lin Wan accidentally walked into the wrong room and became pregnant after having relations with Qin Jin, the richest man in Beijing. She originally wanted to work alone to save up tuition and quietly abort the child, but she encountered bullying from colleagues and was forced by her eldest aunt to marry a fool. At the critical moment, Qin Jin domineeringly appeared to save her and the child, and the two signed a secret marriage agreement. At first, Qin Jin was cold, aloof, and full of misunderstandings, but when he learned that Lin Wan had always worked hard with her own hands and was definitely not a gold-digger, the iceberg in his heart gradually melted.