Sang-hwan became a cop in order to help the downtrodden, but he doesn't get much respect. All that changes when he meets the Seven Masters.

When high school girl Han Ye-won finds an offensive note on the internet school board left by arrogant Ji Eun-seong from vocational school, she replies even more offensively. She doesn't know he's hot-tempered and well-known as a bully. So when Ji Eun-seong starts looking for her to teach her a lesson, Han Ye-won realizes how big her mistake was.