A modern architecture professional woman, whose consciousness accidentally arrives in ancient times, becomes Liu Qingxu, the legitimate daughter of the General's Mansion who encountered an attempted murder. Unwilling to be reduced to a pawn of family power struggles, she is single-mindedly eager to find the token and seek a way to return to her original world. By a twist of fate, she saves the injured and incognito Zhen King Yan Siyuan. The two make a pact, and gradually develop feelings for each other while getting along. Court disputes, princes coveting, and inner courtyard calculations come one after another. Together, the two resolve heavy crises, and between national and personal choices, face head-on the dilemmas of identity and destination, searching for the life answers that belong to each other.