An encounter that is misplaced in time and space opens up a picture of power and intrigue intertwined. The modern soul traveled through time and became Princess Chang Le, who disguised herself as a man and hid in the market, but in the smoke of fireworks on the streets, she ran into the unfathomable eyes of the regent. As a king with a different surname, he holds great power but is burdened with many mysteries. When the two confront each other for the first time, sparks fly. In the temptation of hidden edge, feelings quietly take root.
There are undercurrents in the court, treacherous villains are causing trouble, and bizarre cases occur frequently, disrupting the peaceful and prosperous era. In order to protect the stability of the country, Princess Changle and the Prince Regent worked hand in hand to uncover clues from strange murders to court conspiracies. She uses modern thinking to break the situation, and he relies on years of strategies to deal with the case, and he battles wits and courage with those with evil intentions on the dangerous road of investigating the case.
The country and the mountains are the board, and the hearts of the people are the pieces. In this thrilling chess game, they are not only tacit allies, but also the destination of each other's hearts. When the truth gradually emerges, and the black hand behind the conspiracy is aimed at the pinnacle of power, can the two keep their original aspirations amidst the ups and downs, and can they find each other's perfection in the game of country and love?