Shen Weixi, an orphan girl who is proficient in medical skills, transforms into a medical woman and sneaks into the Zhenbei Palace to repay her teacher's kindness and find out the truth about her master's death to treat Xiao Jue, the eldest son who is blind due to poisoning. The two gradually fell in love while testing and supporting each other. However, when the truth was revealed, she discovered that her master's death was closely related to the interests of his palace, and she was just a pawn on his chessboard that had already been calculated. In the end, amid the turmoil and power struggles in her family and country, she used his most cherished country as a guide and her own life as a sacrifice to offer him a grand "wedding" and eternal farewell.
