Modern nutritionist Su Wan transmigrates into a historical novel as a low-ranking palace attendant destined to be cannon fodder. At the very beginning, she activates the Imperial Health Guardian System. While everyone else competes for the emperor's favor with dances and precious treasures, she wins his heart with a bowl of stomach-soothing porridge and a cup of calming herbal soup, perfectly catering to the cold-faced emperor's needs. From an insignificant nobody whom anyone can bully, she rises through the ranks to become Consort Xian and eventually helps manage the Six Palaces. She takes on the empress and imperial consorts, while overcoming one crisis after another, including poisoning attempts and malicious rumors. She only wanted to live a carefree life and stay out of trouble, but unexpectedly, she heals the emperor's lonely, guarded heart. Through the warmth of her cooking, she reaches his heart, ultimately winning his exclusive affection as they embark on a journey of mutual love.