In Shanghai in 1933, rising film star Su Xueqing ran into Ye Wantang, who looked 90% similar to her, at the train station to avoid being forced into marriage by a collaborator and warlord. The only daughter of the former Qing royal family was escaping from an arranged marriage. The two exchanged cheongsams and formed a life-or-death alliance: Su Xueqing, who was proficient in Western dancing, replaced Ye Wantang and married into the Li Mansion, the richest man in Jiangnan, while Zhengege, who was good at calligraphy, painting and guqin, pursued her medical ideal incognito. When the fake bride stepped into the carved iron gate, she discovered that her fiancé Li Chengyuan was actually the cold-faced officer she had offended at Paramount six months ago. The three tea rules that the old lady in the deep house performs daily physical examinations, the arms blueprints hidden in the second young master's study, and the gunshot wound on Li Chengyuan's waist that matches the wanted order make this substitute marriage dangerous. But the real Ye Wantang reunited with his first love when he was studying abroad in the mission hospital, only to find that the other person was already a special consultant of the Japan Chamber of Commerce...
