Qin Nianwei and Lu Yanshen were both espionage partners and secret lovers. When she became pregnant, Lu coldly demanded she have an abortion, confessing he already had a son with her protégée, Ren Jiaojiao. Devastated, Qin decided on a divorce. Her dying mother had left her four warnings; the first three had come true, so she resolved to defy the last one: "Never divorce." But Lu refused to let go. He conspired with Ren to kidnap Qin, forcibly drugged her, and used her as a bargaining chip for the child. At the critical moment, Xiao Wenhe, head of the Chamber of Commerce and Lu's sworn enemy, came to her rescue. In Xiao, Qin found a respect and tenderness she had never known, and they fell in love. A remorseful Lu then confessed that he had hidden the fact that President Qiao was Qin's biological father, and that he himself was Qiao's illegitimate son—making them half-siblings. Yet the truth emerged: Qin was not Qiao's daughter at all. Qiao, a former undercover cop turned traitor, had wanted to kill Qin's mot