Orphaned as a child, Kim In-ha was raised by his uncle, card player Kim Ji-soo. The brave and reliable guy makes many close friends, including a son from a wealthy family, Choi Yong-won. Soon In-ha meets a girl named Min Soo-yeon, and the two young men fall in love with each other. In-ha introduces Yong-won to Soo-yeon, and he falls in love with his friend's girlfriend. Next, In-ha, who is suspected of murder by Yong-won's father, is forced to flee to America. Here he meets a card game professional and begins his career as a gambler.