On the night of her grand wedding, Wen Xin, the legitimate eldest daughter of the Wen family, fled the marriage and hid in the Bureau of Incense under the alias Wen Xin to make and distinguish incense. Three months later, she was recognized on the spot by Prince Regent Yan Zhiwang during the incense-distinguishing assessment. One is the Prince Regent wielding power over the court and the country, and the other is a princess consort fleeing outside the manor. The marriage certificate had long been voided, yet he never forced her. An old case of toxic incense from three years ago, a tampered true-and-false marriage certificate, and a type of incense that must be lit to tell the truth. When she finally found out the truth, she also finally understood that this escape was in his trap from the very beginning.