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 younger brother, Bai Lang. When Bai Lang sits across from Jin Xun An, he stares at the man with a cold and 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 run away. It turns out that Bai Lang isn’t the first dental patient to try to escape from Jin Xun An, but he’s certainly the most troublesome one since Jin Xuan An began his career.