천신만고 끝에 학교를 빠져나와 주둔지로 향하던 1호차, 전복사고를 겪는다. 낙오된 1호차 아이들은 부상당한 소연의 치료를 위해 안전한 곳을 찾아간다. 과연 그들은 무사히 귀환할 수 있을까?
The first vehicle gets attacked by a sphere and turned over. The soldier dies on the spot, and So-yeon gets badly injured. The students decide to leave the vehicle and find a shelter nearby. Soon, they find a construction site office where they can hide and rest. However, their peace doesn’t last long. Meanwhile, Lieutenant Lee goes against the order and steals a vehicle to rescue the students.
