Synopsis：Jiang Chenghuan's mother is seriously ill. Her father uses her mother's illness to force his eldest daughter Jiang Chenghuan to enter the palace to help her find the deposed prince's Holy Tiger Order. On the wedding night, Jiang Chenghuan puts on a nightgown and sneaks into the palace of the deposed prince Helanzhen to find the whereabouts of the Holy Tiger Order, but is discovered by the deposed prince Helanzhen. The two reach an agreement, but they also secretly fall in love with each other...