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언더더건
以德州扑克为主题，讲述高建（朱豪 饰）是国内最棒的职业扑克牌选手高俊河的儿子，为了振兴家族、挽救面临崩溃的家庭，高建只得加入韩国扑克牌联盟，而在班上转学生的车世英（赵秀敏 饰）鼓励之下，也萌发了青春的罗曼史。
Ko Gun's school life lacks any significant interests as his busy part-time schedules consume his time after classes. However, everything changes when Se Young, a transfer student from LA, joins his class and ends up sitting next to him. Initially indifferent, their frequent encounters gradually ignite a spark in Gun's life.
Se Young firmly believes that fate dictates the frequent crossings of her path with Gun's, and she wastes no time in showing her affection for him. On the other hand, Gun, carrying the weight of his obligations, has little patience for frivolous romance. Despite this, Se Young's presence manages to stir some interest in him. Meanwhile, Gun's encounter with Tae Ha appears to be far from amicable.
Ko Gun returns to the illegal gambling spot to make a few more bucks. However, he gets caught up in a bad hand and returns home with cuts and bruises. Meanwhile, as Se Young helps a drunk man home, she runs into Ko Gun at the drunk man's door.
Se Young can't get enough of Gun, and she follows him everywhere, even to his part-time job at the convenience store. Gun takes her to Ji Chul's bar, and she learns about the upcoming Hold'em tournament. Meanwhile, Gun's sister's health deteriorates, forcing Gun to find a means to save her.
Gun stands before the court for illegal gambling. With the help of petitions from his schoolmates, the court sentences him to 100 hours of community service, and he promises not to get involved in illegal gambling activities. Meanwhile, Gun continues to push Se Young away when he returns to school.
Gun is fueled by a heartfelt determination to clinch victory in the 2022 KPL championship, yet his performance in the final game appears unpromising. Despite feeling trapped with unfavorable circumstances stacked against him, he remains resolute, driven by his deep love and dedication to Jun Hee, his father, and Se Young. Although the odds seem insurmountable, he refuses to concede defeat until the very end.
