At a difficult place in his marriage and career, a middle-aged man gets a shot at a do-over when he's transformed back into his 18-year-old body.

Do Il-Chool (Park Jung-Min) has a talent for playing poker and he is the son of Jjakgwi. His father was a gambler and had one ear cut off after he was caught cheating. Il-Chool meets mysterious gambler Aekku (Ryoo Seung-Bum) and gets involved in the master gambling world.