Having long dreamt of the day she could move into a place of her own, Police Officer Yoon Sae Bom (Han Hyo Joo) is counting down the days until the construction of the city’s brand-new high-rise apartment building is complete. With her long-time friend and fellow officer, Detective Jung Yi Hyun (Park Hyung Sik) planning to move into the complex as well, Sae Bom is certain her new home is going to be nothing short of perfect. Unfortunately, she couldn’t be more wrong. Not long after moving in, a strange sickness begins to spread throughout the building, leaving the city with no choice but to quarantine the residents. Cut off from the outside world, will the uninfected residents find a way to save themselves from this living nightmare? This 2021 South Korean fantasy action thriller series was directed by Ahn Gil Ho.