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.
Yoo Ah-in
Oh Joon-woo
Park Shin-hye
Kim Yoo-bin
Lee Hyun-wook
Lee Sang-chul
Jin So-yeon
Elena Kim
Kim Hak-sun
Joon-woo's Father
So Hee-jung
Joon-woo's Mother
Joo Bo-bi
Joon-woo's Sister
Jeon Bae-soo
Masked Man
