Jin Xun An, a promising young talent, is already the chief dentist at his dental clinic despite his young age. Although he appears cold and aloof, Jin Xun An has nonetheless earned the coveted title of "Master Prince of Dentistry". One day, he is tasked by Bai Qing, one of his elders, with treating her precious little brother, Bai Lang. When Bai Lang sits opposite Jin Xun An, he stares at the man with a cold, ruthless gaze. The mask covering most of Jin Xun An’s face only serves to highlight his deep-set eyes. Bai Lang hears his gentle, reassuring voice telling him not to be afraid. But almost instantly he finds himself dazed, his heart racing, and he comes up with a desperate excuse to escape. It turns out that Bai Lang is not the first dental patient to try to run away from Jin Xun An, but he is certainly the most troublesome since Jin Xuan An began his career.