Kim Ji Hyeok is a leading poor but happy errand boy life. Soon, the dream of buying a restaurant and improving his financial situation fades. It turns out that he is the brother of Gang Dong Seok, the owner of powerful corporations and a patient with urgent need of a heart transplant. And Ji Hyeok must help him and the clinic to save both.
However, things get complicated when Ji Hyeok discovers elaborate plan and lies which was plotted by his new family. To stop being a pawn in the family and business competition, he decides to stand up to fight for his honor, reputation, but also love, that in a surprising way appears in his life.