Si-eun is a model student who is always at the top of his school. Because he only cares about his st...

Young-bin wants revenge on Si-eun for putting him in the hospital by hiring a couple of thugs he kno...

When Gil-su sees his boys beaten up to a pulp, he gets furious and asks who did it. Young-bin lures...

Si-eun sees Soo-ho's blood on the floor and calls Young-yi for help. Gil-su tells Seok-dae to come,...

While hanging out in a karaoke room with his friends, Bum-seok runs into the bullies from his previo...

Bum-seok befriends with Jeong-chan and Tae-hoon, he reeks of alcohol every day. Si-eun thinks Bum-se...

Si-eun gets beaten up by the guys Bum-seok paid to beat up Soo-ho. Si-eun gets seriously injured, bu...

Si-eun and Young-yi get anxious as they can't get hold of Soo-ho for too long. After Si-eun finishes...

Still affected by what happened to Su-ho, Si-eun withdraws from others. Seo Jun-tae contemplates tak...

After being saved by Si-eun, Jun-tae attempts to befriend him — but both are soon dragged into Choi...

While doing volunteer work as punishment for fighting, Si-eun begins to form a bond with new friends...

After Geum Seong-je crosses the line, Si-eun strikes a deal with Na Baek-jin — leaving Park Hu-min,...

Worried for his father and backed into a corner, Hu-min confronts Baek-jin. Si-eun considers studyin...

Si-eun, Jun-tae, and Hyun-tak seek out Hu-min, who has decided to work with Baek-jin to keep the pea...

As Si-eun's absence leaves a gap, Baek-jin presses on with his violent mission. In response, Hu-min...

Hu-min, Hyun-tak and Eunjang students gather to engage in a final confrontation against Baek-jin's g...