“Will you stay a monster or will you stay a human?”
As humans turn into savage monsters and the world plunges into terror, a handful of survivors fight for their lives — and to hold on to their humanity.
Cha Hyun-su moves into the run-down Green Home by himself. Not long after, he witnesses a disturbing sight in his neighbor's apartment.
As a state of emergency is declared, the residents tie up Pyeon Sang-wook for being bitten. Hyun-su is unable to ignore a family in distress.
An unexpected savior protects the children from harm as Hyun-su, together with Yoon Ji-su and Jung Jae-heon, tries to bring them to safety.
Critical information about the monsters is made public. When residents are split on what to do with Hyun-su, Lee Eun-hyeok suggests they hold a vote.
Tasked to carry out dangerous missions, Hyun-su heads back to retrieve Han Du-sik. Sang-wook stops at nothing to finish what he started.
An Seon-yeong confronts the greatest monster in her life. Leaving the building, Seo Yi-kyung heads to her fiancé's office in search of answers.
Hyun-su saves the others from a deadly attack. Running out of necessities, Eun-hyeok announces a plan to venture outside for resources.
Having little options in her state of being, Ji-su agrees to take a big risk. Yi-kyung returns to Green Home just in time.
When a team of outlaws take over the building, the residents are shown how humans can be even more barbaric than the monsters.
A military leaflet promises a route to safety, but the group is reluctant to trust it. Hyun-su is exposed to a new perspective on his condition.
Song Kang
Cha Hyun-su
Lee Jin-uk
Pyeon Sang-wook
Lee Si-young
Seo Yi-kyung
Jung Jin-young
Park Chan-young
Lee Do-hyun
Lee Eun-hyeok
Go Min-si
Lee Eun-yu
Yu Oh-seong
Tak In-hwan
Oh Jung-se
Dr. Lim
Kim Moo-yul
Kim Yeong-hoo
Kim Sia
Seo I-su
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