Middle-aged woman Cui Shujuan lost her husband early and raised his son Li Kai and adopted daughter Cui Qianqian alone. Just as life was improving, Qianqian fell seriously ill. At the hospital, Li Kai forced Cui Shujuan to hand over Qianqian’s emergency funds for his own wedding. In crisis, a mysterious security guard Qin Lang saved her—who turned out to be a billionaire. Qin Lang’s repeated rescues and her resilience stirred his protective instincts. Fearing his status would scare her, Qin Lang hid his identity and quickly married her. Their “married first, love later” story begins.