Yooju, a university hospital resident, is looking forward to a sweet married life with her fiancé. One day, she meets Min Soha at the hospital, and after sharing drinks and personal wounds, the two grow unexpectedly close. On their way home, they get into an accident. When Yooju regains consciousness, the man standing before her isn’t her fiancé—but a stranger named Kang Woobin, claiming to be her husband. Even more shocking, the face in the mirror is not Yooju’s, but Min Soha’s. In the midst of this incomprehensible situation, Yooju pretends to have lost her memory and continues a dangerously delicate married life with Woobin while living as Min Soha.