1. Episode 1

7.995

. 18 December 2020. 51 min

Cha Hyun-su moves into the run-down Green Home by himself. Not long after, he witnesses a disturbing sight in his neighbor's apartment.

2. Episode 2

6.972

. 18 December 2020. 57 min

As a state of emergency is declared, the residents tie up Pyeon Sang-wook for being bitten. Hyun-su is unable to ignore a family in distress.

3. Episode 3

7.5

. 18 December 2020. 47 min

An unexpected savior protects the children from harm as Hyun-su, together with Yoon Ji-su and Jung Jae-heon, tries to bring them to safety.

4. Episode 4

8.2

. 18 December 2020. 47 min

Critical information about the monsters is made public. When residents are split on what to do with Hyun-su, Lee Eun-hyeok suggests they hold a vote.

5. Episode 5

7.7

. 18 December 2020. 45 min

Tasked to carry out dangerous missions, Hyun-su heads back to retrieve Han Du-sik. Sang-wook stops at nothing to finish what he started.

6. Episode 6

7.5

. 18 December 2020. 54 min

An Seon-yeong confronts the greatest monster in her life. Leaving the building, Seo Yi-kyung heads to her fiancé's office in search of answers.

7. Episode 7

8.1

. 18 December 2020. 50 min

Hyun-su saves the others from a deadly attack. Running out of necessities, Eun-hyeok announces a plan to venture outside for resources.

8. Episode 8

7.4

. 18 December 2020. 53 min

Having little options in her state of being, Ji-su agrees to take a big risk. Yi-kyung returns to Green Home just in time.

9. Episode 9

7.8

. 18 December 2020. 56 min

When a team of outlaws take over the building, the residents are shown how humans can be even more barbaric than the monsters.

10. Episode 10

8.4

. 18 December 2020. 59 min

A military leaflet promises a route to safety, but the group is reluctant to trust it. Hyun-su is exposed to a new perspective on his condition.