A military helicopter arrives at the school but only to retrieve a laptop containing vital research; it leaves the students behind once the new "asymptomatic" threat is understood. Feature Credits Yoon Gwi-nam
At the quarantine camp, Commander Jin Seon-mu learns the virus is mutating. After observing the "hambie" (half-zombie) Min Eun-ji , he realizes the virus can remain dormant, leading to harsher quarantine measures for all Hyosan citizens. A military helicopter arrives at the school but
Trapped on the school roof, the surviving students take advantage of a sudden, heavy thunderstorm. The rain and thunder dullen the zombies' senses, allowing the group to move toward the mountains with reduced detection. A military helicopter arrives at the school but