26-Year-old Si Nanyu approaches Gu Yanchen, the crown prince of the Gu family, as a "substitute lover". On the surface, he is the vain white lotus, but in fact he wants to avenge his twin sister Xia Weiran who died tragically. She used old tricks to set up a dragnet to make Gu Yanchen fall in love with herself and the other person at the same time.
