At the end of the Tang Dynasty, Li Qingliu, a business tycoon and Long Aoyi, the boss of Longzhu Gang, work together to investigate the missing of gold threads and learn from each other during the investigation. Li has to enter the palace because of the displacement of civilians caused by profiteers. Long also goes there to seek justice for the impoverished and displaced civilians and meets Li again. They join hands to unveil the truth and become together ever after....

The series tells the story of cute and smart girl Shi Xia (Wu Qianying), who accidentally came into the unfamiliar mythical world to find her disappeared brother. Her daily life with the Demon Shi Dong (Dai Yunfan), a loving brother, and the Lord Hou Chi of Yuhua School (Zhao Yingbo) is funny and heartwarming. A hilarious story of two brothers “protecting” their little sister starts....