Bai Lunran, a descendant of a modern Chinese medicine family, traveled through time and became the substitute princess of Ning Wang Mo Shaohua. The original owner was snubbed and humiliated by King Ning, and finally committed suicide by hitting a pillar. After Bai Linran woke up, facing Prince Ning's letter of divorce, she cleverly obtained the letter of He Li and a thousand taels of silver, and left the palace with her pregnancy. After returning to the Bai family, she discovered that her adoptive mother Jiang was poisoned, and the servants in the family colluded with outsiders to plot the family property. Bai Liran relied on her medical skills and wisdom to expose the conspiracy, send the evildoers to justice, bought a pharmacy, took in loyal servants, and started to set up her own business.