Gifted with special powers, fighting skills and slick hair, the rowdy KO One navigates tough friendships and high school romance.

At first glance, high schoolers Xiang Hao Ting and Yu Xi Gu appear to be polar opposites: While Xiang Hao Ting is an outgoing, hot-headed extrovert and some-time bully, Yu Xi Gu prefers to keep a low profile and focus on his schoolwork. They seem bound for totally different futures – the bookish Yu Xi Gu looks destined for academic success, while life is just a long popularity contest for Xiang Hao Ting. But a quirk of fate – and a crucial intervention by a female schoolmate – results in the two young men’s paths crossing.

Xiong Ge starts a new life following the disappearance of her sons and ex-husband. She opens a hostel called The X-Dormitory, in which she treats her tenants like her family. When Room 206 mysteriously appears out of no where and out walks her ex-husband, she gets a terrible feeling in her gut that something bad is about to happen.