Emergency doctor Jiang He transmigrated into an illegitimate daughter of a marquis's manor. She was promised sincerity and a lifetime together by the heir Zhao Chengchuan, only to be neglected three years later—her cousin Zhou Wan claimed false merit, her mother-in-law despised her, and a concubine came to the door. A bowl of hot soup splashed away her sobriety. With her modern medical skills, she exposed Zhou Wan's fake sprained foot and stolen merit of saving the empress dowager in public, and even detected fatal nux vomica from the medicine dregs. It turned out this body trapped her only way out to go home: jumping into the well at the Rat hour on the Winter Solstice, limited to five tries, and now only the last one remained. Without fighting or contending, she quietly counted the carved marks on the wall, waiting only for that night to take a leap. Can she go home with the truth? Who on earth is the one kept in the dark?