After transferring to Eunjang High School, Yeon Si Eun still carries the scars of his past – a brutal lesson in what it means to fight and fail. Determined to never lose another friend, he forms unlikely bonds with Park Hu Min, Seo Jun Tae, and Ko Hyeon Tak, but their friendship soon attracts the attention of Alliance, a ruthless gang led by the vicious Na Baek Jin.

Forced into yet another war of survival, Si Eun must push himself beyond his limits. But against an enemy stronger and more merciless than anything he’s faced before, will he be able to protect those at his side – or will he once again watch helplessly as they fall?