Shen Yuan, the daughter of an imperial tutor who had her entire family slaughtered, disguised herself as a man and took the imperial examination to become an official. She reversed the family's case in the maelstrom of power and intrigue, but found that she was just a pawn in a larger chess game. The commander of the Jinyi Guards, Lu Lin, secretly protected and repeatedly tested her. The battle for the crown prince and the King of Jin drew her into the center of the storm. When all the truth was revealed, she chose the most unexpected way to let the world give her justice.