Storyline:

During the Lantern Festival, Princess Huai Si mysteriously dies at a banquet. Li Pei Yi, the chief guard, and Xiao Huai Jin, the Lingtai Lang, are tasked with the investigation, uncovering that the princess was the murderer. Betrayed and wronged, she avenged herself by punishing her betrayer and the daughter of a powerful family before jumping off the Penglai Terrace to escape her marriage fate.