Episode 1 | Episode #1.1

Young-joo breaks up with her boyfriend, Jae-yoon. He accepts the breakup with a heartfelt voice message. Upon hearing this, Young-joo heads to his workplace, but she encounters an unexpected incident on her way there.

Episode 2 | Episode #1.2

Jae-yoon and In-ho find a plane crashing into the heart of Seoul. Young-joo and Jin-wook confront zombies and team up with Tae-shik. Together, they begin their fight for survival.

Episode 3 | Episode #1.3

Jae-yoon, In-ho, Soo-jeong, and Chef Jung return to the air defense unit. However, even the base they thought was safe begins to face the threat of zombies. Young-joo decides to go alone to Tower 77 A, where Jae-yoon is located.

Episode 4 | Episode #1.4

Jae-yoon and Young-joo reminisce about their happy past. Jae-yoon and his squad mourn the loss of their comrades. Young-joo's group encounters Tripeater, who has been bitten by a zombie but has not yet turned.

Episode 5 | Episode #1.5

Episode 6 | Episode #1.6

Episode 7 | Episode #1.7

Episode 8 | Episode #1.8