

7.673 minSeason 1 • Episode 12
LatestSae Bom learns that happiness is not your house but the person you are beside. And that person to her is Yi Hyun. She determines to make it back to the apartment, her house, and to where Yi Hyun would be. Dying or getting infected doesn't scare her as she tells him to wait for her.
A new type of deadly virus spread throughout the city, and the apartment where has different social classes of people is sealed off. With the fear of the virus, and the conflicts of the different classes, the residents have to spend and survive in the new habitation.
Acting
Han Hyo-joo's micro-expressions carry entire episodes
Production
The apartment building becomes a suffocating character
Writing
Zombies as class metaphor — actually sticks the landing
Creator
Han Sang-un
Trivia, insights & behind the scenes
Released during COVID-19, the show's apartment quarantine hit different for Korean audiences who'd lived through actual building lockdowns. The class tensions mirror real Seoul housing crises where 'penthouses vs. basement units' isn't metaphor.
That scene where Sae-bom drinks the infected blood to prove a point? Han Hyo-joo did the take three times with actual colored liquid. The director kept the second take because her disgust looked too real in the third.