Modern female doctor Su Yao unexpectedly travels through time to become an ancient peasant girl. Just as she wakes up, she faces a bully forcing debt collection, an injured mother, and a family out of food. Relying on modern medical knowledge and a mysterious medical system, she gathers herbs to heal diseases, earns twenty taels of silver in three days, and protects her parents, younger brothers, and younger sisters. As her medical skills are introduced to the capital, she is summoned into the palace to treat the eldest princess, but gets embroiled in the imperial hospital struggles and court conspiracies. She walks hand in hand with the cold-faced general Shen Mo, stepping from the countryside to the imperial court, rewriting her destiny with medical skills, and also harvesting sincere companionship.