An unfavoured princess with insomnia and a stone-faced general investigating a suspicious death were fated to meet, thus igniting a sweet and heart-wrenching romance. Ninth Princess Chu Yue has experienced long-term insomnia stemming from a childhood accident. She and her younger brother have depended upon each other all of their lives. Under the wrong circumstance, Yue weds the famous general Xue Yao. When Yao learns of the suspicious events that occurred surrounding the death of his older brother, Yue joins forces with him to uncover the truth.