After spending eight years defending the northern borders, Prince Jiang Xu returns to the royal court of the Daxian Dynasty to investigate the embezzlement of military funds from his army. In order to help his investigation, he proposes marriage to Ming Tan, a young woman from a distinguished military family, to shield her family from political exploitation. However, as Jiang Xu delves deeper into the case, he discovers that the embezzled funds are deeply intertwined with the Daxian Dynasty's entire economy – but as he works to dismantle the criminal network, the Ming family becomes scapegoats for the true masterminds. Can Jiang Xu clear his wife's family's name, and will his efforts bring him and Ming Tan closer than they ever expected to be? This drama was adapted from the novel "Little Cardamom" by Bu Zhi Shi Ke Cai.