After three years of a business marriage, Lin Yin and Zhou Jingshen have kept their distance and stayed out of each other's affairs. That changes when an accident leaves Zhou Jingshen with amnesia. He successively believes himself to be Lin Yin's secret lover, personal bodyguard, and stand-in husband, completely changing his behavior as he clings to her under a different identity every day. From helpless exasperation to a softened heart, Lin Yin gradually discovers a side of this man he has never shown her. After Zhou Jingshen regains his memory, he finally gathers the courage to confess his feelings. It turns out he has loved her deeply for a long time but never dared to get close. The two drop their pretenses and decide to start over.