I think the plot will go like this:
Episode 1: Yeon Si-eun beats up Choi Hyoman, and rumors start to spread. Park Humin and Go Hyeontak hear about the rumors, visit Si-eun, and befriend him.
Episode 2: Yeon Si-eun saves Seo Jun-tae from bullies, and they become friends.
Episodes 3 & 4: Yeon Si-eun, Seo Jun-tae, Park Humin, and Go Hyeontak fight bullies together and sharesone bonding moments. Na Baek-jin, Geum Seong-je, and the Alliance gang are introduced.
Episode 5: Choi Hyoman, who has connections to the Alliance gang, informs them about Yeon Si-eun. Na Baek-jin orders Geum Seong-je to attack Yeon Si-eun because he previously defeated Kang Woo-young and Choi Hyoman.
Episode 6: Geum Seong-je visits Eunjang High, beats up Seo Jun-tae, and bullies him. Yeon Si-eun hears about it and confronts Seong-je.
Episode 7: Yeon Si-eun faces off against Geum Seong-je. Meanwhile, Park Humin arranges a war with the Alliance gang.
Episode 8: The war between Eunjang High and the Alliance begins. Park Humin fights Na Baek-jin, followed by a final showdown between Yeon Si-eun and Na Baek-jin. Na Baek-jin dies, and the episode ends on a cliffhanger with Ahn Suho waking up.