As a grisly virus rampages a city, a lone man stays locked inside his apartment, digitally cut off from seeking help and desperate to find a way out.
유아인
as Oh Joon-woo
박신혜
as Kim Yoo-bin
이현욱
as Lee Sang-chul
Jin So-yeon
as Elena Kim
Kim Hak-seon
as Joon-woo's Father
소희정
as Joon-woo's Mother
Joo Bo-bi
as Joon-woo's Sister
전배수
as Masked Man
이채경
as Masked Man's Wife
오혜원
as Police Officer
Jeon Woon-jong
as Firefighter
손경원
as Security Guard Infectee
