小学游泳选手俊浩无论多么努力，却总是只能在比赛中位列第四名。他的母亲找到了前游泳冠军选手金光洙给俊浩进行私人训练。最终，金光洙的极端训练方式明显地提高了俊浩的比赛结果。
遇播放卡顿或无法播放时，可切换线路播放
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