Celeste Sterling, medical descendant, reincarnates as abandoned wife of Marquess of Tranquility Manor, forced to sell herself by cruel family. Activates Spiritual Spring Culinary System, with medical skills, Spiritual Spring water. Medicinal congee cures illnesses, earns royal prince's favor. Fights toxic family, uncovers Marquess Manor's poisoning case. Builds career, ennobled as Lady Celeste, Countess of Peace, rejects ex-husband, spreads medicinal cuisine.
