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 … Han Hyo-joo, Park Hyung-sik, Jo Woo-jin, Lee Jun-hyeok, Park Joo-hee, Baek Hyun-jin, Back Joo-hee Added on Netflix 2022-04-16. Youtube Trailer