Do Il-chul, a civil service exam student, is more drawn to gambling than to textbooks, drifting through smoky poker halls rather than crowded libraries. In one such hall he meets a mysterious woman named Madonna, who quickly dismisses his dream of becoming a professional gambler. Il-chul presses on, insisting he’s a rising tazza, but she strides away before he can persuade her, leaving a lingering sense of unfinished business.
Not long after, he sees Madonna again—this time in a car that smashes into his bicycle. Desperate for compensation, he wagers a high-stakes poker match against the car’s owner, only to lose badly and tumble deeper into debt. The pressure tightens as loan sharks close in, until a mysterious gambler known as “One-Eyed Jack” intervenes, paying off the debt and claiming he owed a favor to Il-chul’s late father, Jjak-gwi.
Driven by a hunger to become a true tazza, Il-chul agrees to let Jack take him under his wing, on the condition that he can win at roulette. After a hard-won victory, he joins Jack’s team of gamblers—among them Young-mi, Kka-chi, and Mr. Kwon—to target a wealthy man known as Mr. Mool and pull off a calculated scam. The plan pulses with the promise of easy money, but its backdrop is a dangerous underworld where trust is a fragile currency.
As Il-chul’s crew edges closer to their prize, a personal reunion complicates everything: Madonna returns, now linked to Mool, insisting that her husband is dead and that she has sunk everything she owns into Mool’s ventures. Il-chul cautions her to pull out, and the pair share a charged night that turns out to be a trap. Mool’s enforcers beat Il-chul, and the rest of the team is pressed to the brink. In a moment of sacrifice, Kka-chi gives his life to help Young-mi and Mr. Kwon escape the tightening noose.
The tale’s tide shifts again when Jack intervenes to save Il-chul and reveals a painful truth: he once betrayed Il-chul’s father, Jjak-gwi. Jack’s confession ushers in a brutal escalation as he confronts Ma-gwi, a ruthless opponent, and loses his life in the process. Traumatized and adrift, Il-chul becomes a drifting gambler until a maimed Kka-chi reappears with the grim news of Jack’s death. Fueled by a desire for vengeance, Il-chul vows to settle the score and challenges Ma-gwi to one final, decisive game.
Madonna, whose alliance with Ma-gwi and Mool has come to light, seeks a deal with Il-chul, only to discover the deceit has already been orchestrated against her. In the climactic match, Ma-gwi falls into Il-chul’s trap and loses, but the revelation comes too late: Madonna’s betrayals are laid bare, and Ma-gwi is dragged to a fish farm where she exacts her own grim revenge for her brother’s murder, severing his arm before watching him drown. Though Madonna earns nothing material, she discovers a sense of closure as she walks away from the wreckage of the scheme.
Back at the center of it all, Il-chul’s wit and nerve prove decisive. He splits the winnings with Mool as promised, but the deeper plan was always survival: Mool attempts to kill him to keep the money. Il-chul had anticipated the treachery and bribed Mool’s driver, who turns on Mool and kills him instead. When Il-chul offers the driver more money, the driver declines, asserting that a true gambler knows when to walk away.
With the immediate danger behind him, Il-chul shares his winnings with his old teammates and returns to his studies, ultimately passing the civil service exam and becoming a government employee. In the post-credits scene, the lure of the game resurfaces as his colleagues pull him into another poker match, leaving him caught between the discipline of a new career and the pull of a lifelong addiction.
