Chen Mo, orphaned at a young age, is forced to break up with his wealthy girlfriend by her father. At his lowest point, he unexpectedly inherits the mystical medical legacy, The Record of Benevolent Merit. By healing the sick and saving lives, he can accumulate merit and unlock ancient and modern medical techniques and supernatural arts. Starting as a junior dispensary pharmacist at Ren'an Hall, he relies on his extraordinary acupuncture skills and compassionate heart to solve baffling medical cases, treat patients, and repeatedly prove his doubters and schemers wrong. Facing obstruction from powerful wealthy families and secret attacks from evil cultivators, he remains true to his calling as a physician, continually advancing his medical skills and merit. Ultimately, he rises from an impoverished young man to a legendary miracle doctor respected by all, and rightfully reunites with his devoted girlfriend, Xu Nian'an.