Medicine girl Su He encounters a "fireball" falling from the sky while collecting medicine, and is knocked unconscious by Lin Jingzhe, a female special forces soldier who is covered in blood and dressed in strange clothes. Lin Jingzhe, who was seriously injured and on the verge of death, was still obsessed with "protecting the target" and "coordinates" while in a coma. When Su He hung up his life with herbs, the soldiers pursued him to the ruined temple. At the critical moment, Lin Jingzhe suddenly stopped Su He and asked for the "coordinates". Su He pointed the scalpel at the pursuing soldiers outside the door. Lin Jingzhe instantly flashed his bright light weapon to drive back the pursuers, and recognized Su He's identity as "doctor". Two souls from different worlds were forced to be bound. In a strange ancient world full of dangers, one possessed future technology and killing instinct, while the other embraced traditional medical skills and a heart to save the world. From suspicion and precaution to dependence on life and death, they use their own methods to fight against the wars of troubled times, plague conspiracies and the strife of the powerful, and jointly write a legend of extreme survival and mutual redemption.
