Kim Tae-hyun is a capable specialist. Frantic for cash to pay for his sister’s hospital expenses, he takes on the code name Yong-buddy and offers his clinical abilities to those in rough shape yet who can’t do so freely, managing crooks and degenerate tycoons. Joining a group of degenerate doctors Kim salvages “dozing magnificence” Han Yeo-jin, a chaebol beneficiary, from a medicinally incited trance like state, prompting potentially negative side-effects.

Kim Tae-Hyun (Joo Won) is a brilliant specialist, yet he is continually irritated by obligation gatherers because of his more youthful sister. His more youthful sister requires costly kidney dialysis. To get more cash-flow, he goes to see patients secretly for a high expense. He doesn’t mind whether these patients are crooks the length of they can pay him.