Han Geng and Zheng Yunhao were childhood sweethearts. When they grew up, the current emperor ordered the two to get married. Unexpectedly, Han Geng unfortunately passed away the night before the wedding. No one knew what happened.
A few years later, Han Geng came back to investigate the matter thoroughly. He wanted to find the murderer. When he came back, he heard the news that Zheng Yunho was getting married, but he could no longer be with him because he had turned into a monster.