Gu Wanzhou, a doctor of medicine who returned from studying abroad, has a lifelong ideal of promoting modern medicine and saving lives and healing the wounded. After returning to China, she opened a small clinic, determined to light up a beacon of reason in troubled times. However, on the first day of opening, the ideal was shattered by reality - a group of soldiers broke in carrying a half-dead man. That man was Huo Chuan, the legendary iron-blooded warlord who killed without blinking an eye. Gu Wanzhou's daily medical practice has changed since then: "Mr. Huo, the wound needs to be disinfected. Please take off your clothes." "Be bold." "Mr. Huo, in order to prevent infection, please abstain from alcohol and spicy foods these days." "Dreaming." "Mr. Huo, the bullet must be removed and local anesthesia is required." "No matter what the pain is." Gu Wanzhou pushed up his gold-rimmed glasses expressionlessly, and silently took out the largest syringe: "In that case, in order to exercise your willpower, I decided not to use anesthetics." Huo Chuan: "... How dare you!" People in the whole city spread the news that Commander Huo found a bold female doctor from nowhere, and made the Lord of Hell so angry every day that he blew his beard and glared. Only Huo Chuan himself knew that in that small clinic, the smell of disinfectant overwhelmed the smoke of gunpowder, and the calm doctor's instructions warmed the cold night. He has seen too many flatteries and walked through countless mountains of corpses and seas of blood, but he has never seen such a person. She held the scalpel and calmly opened his wounds, and also opened his heart that had been sealed for many years. He shielded her from bullets, and she healed his scars. "Doctor Gu, I will protect this world for you. You can only treat me alone.