Blinded only by a desire to get his revenge, Shim Gun Wook, falters at nothing to get back at a conglomerate family that took him in and threw him out. Using his charms and cunning mind, Gun Wook intends to use the members of the Haeshim Corporation family like a game of chess to destroy it, one move at a time. His first move, seduce the youngest daughter, Hong Mo Ne, and infiltrate the heart. However, when he and Moon Jae In cross paths, his life takes a turn and becomes complicated.