After the lost of their Platoon Leader, Class 3-2 of Sungjin High is now left to fend for themselves. 

With their communication equipment destroyed, they have no choice but to operate without adult support, no commanding officer, no backup, and no external guidance. 

As Class President and appointed Sergeant First Class, Yoo-Jung took control. Alongside Jong-soo as Class Vice President, he helped. With the cooperation of the class, the group successfully organizes patrols, secures essential r