In the Liang Dynasty, imperial power and aristocratic families coexisted. The male protagonist Xiao Yan is the fourth prince. His mother and concubine came from a humble background and were framed and died young. He was raised on the edge of the cold palace and was named "Prince Su" when he became an adult. In fact, he was the "Three No Princes" with no fiefdom, no real power, and no one to care about. The forces that seize the throne are mainly divided into three factions: the crown prince (the eldest son, mediocre but with status), the second prince Xiao Yu (whose mother's family is Zhenguo Gongfu, ruthless), and the fourth prince Xiao Yan (who counterattacks later).