Shen Qingwu, the concubine of the Hou family, was mistreated by her aunt since she was a child. She met the mysterious boy Pei Jiuyuan while doing fortune-telling on the street. Pei Jiuyuan shocked the capital with his sentence "Fengqi Wutong" and was regarded as a charlatan by Shen Qingwu. The two became grudges due to misunderstandings, but in fact Pei Jiuyuan saw that Shen Qingwu had a different fate, and secretly helped each other many times in the name of "Innocent Star Lord". During the court coup, Shen Qingwu was involved in a conspiracy to seize the rightful son to save his brother. Pei Jiuyuan sneaked into the Hou Mansion as a fortune teller and became a teacher. The two gradually got closer during incidents such as uncovering a traitor and resolving a border rebellion.