Kim Seok Joo, played by Kim Myung Min, is a ruthless and cunning lawyer who is determined to achieve success no matter the cost. Kim Seok Joo is forced to rediscover who he is as a person after a catastrophic event forces him to lose his memory. He must then decide whether he would fight for justice or revert back to his former ways. Before the accident, he was engaged to Yoo Jung Sun (Chae Jung Ahn), the only grandchild of a wealthy family; nevertheless, with no memory of her, he starts to fall in love with Lee Ji Yoon (Park Min Young), an idealistic intern at his legal company. As his memories return, his heart must decide whether to follow a new love or an old greed.