Big Man

Kim Ji-hyuk grew up a penniless orphan and lived a "third-rate life" before deciding to turn himself around and work himself to the bone, with humble dreams of owning his own restaurant. He gets entangled in a plan to save the life of Kang Dong-seok, a chaebol heir who needs a heart transplant, and is told that he is Dong-seok's older brother and begins a lavish new life in that world... and then later learns that it was all a lie. Disgusted with the corruption of his chaebol "family" and spurred on by hatred of the world's unfair realities, Ji-hyuk embarks on a reckless revenge mission in order to protect himself and those he loves.