Shen Nanqiao cuts off a humiliating and wrong marriage, forming an alliance of mutual redemption with Prince Regent Xiao Yehai. Relying on her superb medical skills to suppress the cold poison, cleanse the pharmacy, and clear her mother's grievances, she rescues a framed imperial concubine. With his power to protect her, he gives her complete trust and confidence. Together, they tear apart the layers of conspiracy from the East Palace and the Prime Minister's Estate, uprooting court corruption. The female protagonist rises from an abandoned boudoir daughter to a prince's consort holding military power, walking from a transactional bond to deep affection, guarding the peace of the country together.