Mr. Poker (Lee Ju-hyun), the university poker champion, loves poker because it's the most cerebral game created by humans! One day, Mr. Poker's friend, Dr. J (Sa Kang), gets into trouble with some shady characters while enjoying online poker and incurs a huge debt. Mr. Poker, who steps in to resolve the issue, gets his revenge cleanly without getting caught up in the fraud. However, things get complicated when the low-life gangster Raibang (Hyun Han-joo) kidnaps Mr. Poker and forces him into a showdown with a skilled one-armed fixer (Jo Sang-gu)... Mr. Poker enters the poker tournament hosted by the game site. The poker tournament is divided into two categories: the junior division for participants below university level, and the senior division for the general public. In the senior division, Dr. J, Lee Wai-soo (Lee Wai-soo), Skinhead Hong (Hong Seok-cheon), and others reach the finals, delivering thrilling matches. In the junior division, Mr. Poker, Nana (Hwang In-young), Hyun Woo (Choi Hyun-woo), David (Jin Yi-han), and others participate, starting a breathtaking confrontation from the beginning of the competition... Mr. Poker makes it to the finals, but then... Meanwhile, former professional gambler Mr. Choi (Choi Jae-ho), who has closely observed Mr. Poker's character and skills, offers to become the sponsor for Mr. Poker, who dreams of becoming a professional gambler. Will Mr. Poker ultimately be able to ascend to become the undisputed number one in poker...