Contains spoilers for this episode and earlier episodes.
The knife hits Cheong-san with its handle, allowing him to keep running into the library. Gwi-nam follows him across the bookshelves and demands the phone containing the principal's murder. During their fight, Cheong-san strikes Gwi-nam's eye with the phone and sends him down among the zombies. Cheong-san escapes the library and reaches the music room, while his attacker is left being bitten and shouting that he will take revenge for the injury.
Su-hyeok returns to the broadcasting room without Cheong-san, leaving On-jo unwilling to wait for another rescue that may never arrive. She and Joon-yeong climb to the laboratory and recover a drone. Its camera lets the group search the school without crossing the corridors themselves. They locate Cheong-san alive, then fly beyond the grounds and see the destruction in town. Ji-min recognizes her parents' vehicle and discovers that both of them have become infected.
Jae-ik and Ho-cheol reach the chicken restaurant, where Hee-su remains tied near her baby. They take responsibility for the surviving newborn while searching for supplies. So-ju and the council group arrive in military quarantine, where his wish to find On-jo runs against the camp's restrictions. Back in the library, Gwi-nam gets up despite his wounds. The zombies no longer attack him, and he retains his thoughts, leaving him free to resume his hunt for Cheong-san.