10 episodes · first aired 2020-12-18
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | Episode 1 2020-12-18 | 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. | 2020-12-18 | 8.0 |
 |
Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.
| 02 |
Episode 2 2020-12-18 |
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. |
| 2020-12-18 |
| 7.0 |
 | 03 | Episode 3 2020-12-18 | 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. | 2020-12-18 | 7.5 |
 | 04 | Episode 4 2020-12-18 | 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. | 2020-12-18 | 8.2 |
 | 05 | Episode 5 2020-12-18 | 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. | 2020-12-18 | 7.8 |
 | 06 | Episode 6 2020-12-18 | 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. | 2020-12-18 | 7.6 |
 | 07 | Episode 7 2020-12-18 | Hyun-su saves the others from a deadly attack. Running out of necessities, Eun-hyeok announces a plan to venture outside for resources. | 2020-12-18 | 8.1 |
 | 08 | Episode 8 2020-12-18 | 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. | 2020-12-18 | 7.7 |
 | 09 | Episode 9 2020-12-18 | When a team of outlaws take over the building, the residents are shown how humans can be even more barbaric than the monsters. | 2020-12-18 | 8.0 |
 | 10 | Episode 10 2020-12-18 | 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. | 2020-12-18 | 8.5 |
