Su Wanyi, the legitimate daughter of the Duke of Guo, was treated as an abandoned daughter by her family. She married Xiao Jue, the rumored bloodthirsty and cruel king of Zhenbei, who killed three princesses in her place. On their wedding night, she accidentally discovered the secret that Xiao Jue was poisoned and was about to die soon. She also discovered that he was secretly pursuing an old case that could overturn the dynasty, and the case was actually related to the Su family! In order to save his life, and to find out the conspiracy that his family was involved in, Su Wanyi was forced to deal with this "trapped beast". In the frightening palace, he went from testing each other, being suspicious and guarded, to sharing life and death, and secretly developing feelings. When the truth was revealed, she realized that this wrong marriage was actually the beginning of fate.
