Shinwoo, Ik-Han and Rai are walking Yuna home after school, talking about the suspect of the recent murder and Shinwoo decides to head to PC Bang as it's too early to go home. Meanwhile, M-21 and M-24 are taking a break from looking for the casket and suddenly find something more entertaining to do. They happen to see students wearing the same uniform as Shinwoo and decide to track him so they can enjoy another clash of the Infected and Shinwoo. As they set off for the search, the infected whiles away his time in the darkness of the sewers, waiting for his chance to kill Shinwoo.