After spheres from the sky drop to the ground, military training begins for the students to ensure their safety. However, the students find it too demanding and have a difficult time. As students head to the shooting range to learn how to shoot, they get caught off guard and fall into a crisis. Meanwhile, a student gets killed by one of the spheres.
Quest roles:
Lee Jung-min(Seo Ja Yoon), Shin Jae-hwi(Corporal Park), Lee Jang Won([Math teacher]), Sung Ji-Ru(Park Young Il)