Yonggamhan Simin

During her student years, Si-Min So was an undisputed force in the hapkido world, commanding respect and dominating the competitive scene with her exceptional martial arts skills. Seven years have passed since those days of athletic glory, and she has now returned to the high school environment in a very different capacity. Stepping into the role of a substitute teacher, Si-Min is driven by a single, unwavering ambition: securing a permanent, full-time teaching position. She is determined to leave her fighting past behind and build a stable career within the classroom. However, her path to professional stability is immediately threatened when she crosses paths with Su-Gang Han, the most notorious bully in the school. Rather than respecting her authority, Su-Gang actively targets the new substitute, launching relentless efforts to undermine her standing and bring her down. Now caught in a tense battle of wills, Si-Min must navigate the treacherous dynamics of the school while facing off against a student who refuses to back down. The ultimate question remains whether her determination—and perhaps the dormant strength of her hapkido days—will be enough to overcome Su-Gang’s interference and finally achieve her dream of becoming a full-time educator.