
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 Soo 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 Pyun 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 Soo and Jung Jae Hun, tries to bring them to safety.
Critical information about the monsters is made public. When residents are split on what to do with Hyun Soo, Lee Eun Hyuk suggests they hold a vote.
Tasked to carry out dangerous missions, Hyun Soo heads back to retrieve Han Du Shik. Sang Wook stops at nothing to finish what he started.
An Sun Young confronts the greatest monster in her life. Leaving the building, Seo Yi Kyung heads to her fiancé's office in search of answers.
Hyun Soo saves the others from a deadly attack. Running out of necessities, Eun Hyuk announces a plan to venture outside for resources.
Having little options in her state of being, Ji Soo 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 Soo is exposed to a new perspective on his condition.
Hyun-su wakes up to find Sang-wook, who has a new goal for them. Lee Eun-yu and Ji-su escape a violent evacuation and commandeer their next destination.
Eun-yu finds a hint of Eun-hyeok's fate at a stop in her journey. During an experiment, Hyun-su finds that he has a special effect on another monster.
On a mission to find her husband, Yi-kyung makes a shocking discovery. The battered Ji-su and Eun-yu arrive at a new shelter, but catastrophe awaits them.
The survivors take shelter underground, where supplies run low. In her continued search for Eun-hyeok, Eun-yu encounters a young girl.
Sergeant Kim and Master Sergeant Tak clash on how to protect their men. The mysterious girl approaches Eun-yu with an enticing offer.
Eun-yu chases Yi-kyung and the girl, with Park Chan-yeong right behind her. The death of survivors and a missing soldier throws the stadium into unrest.
Eun-yu shares a terse reunion with Hyun-su. While the platoon embarks on their search for a missing soldier, the stadium experiences a monster threat.
As Yi-kyung faces death, the young girl tries to save her. In the ruins of the lab, the soldiers discover other survivors who aren't what they seem.
Sergeant Kim goes up against countless monsters to make it out alive with his men. Seeing the humanity in Yi-kyung, Hyun-su tries to bring her back.
Resolved to find his child, Jung Ui-myeong heads to the stadium. Despite Hyun-su's unpredictability, Eun-yu tries to wake him up during a sudden crisis.
Yi-kyung discovers Ui-myeong's true motive for him and their daughter. Eun-yu accepts a challenge from Hyun-su's alter ego and heads to the stadium.
The girl contemplates her future with Yi-kyung — and a life away from Ui-myeong. Sergeant Kim encounters Eun-hyeok, who reveals a new kind of being.
Eun-hyeok's reunion with Hyun-su and Eun-yu turns into chaos. Ui-myeong prepares for his body transfer, while Sergeant Tak carries out his own plan.
In her trek to the stadium, Eun-yu begins to feel a personal worry. While Ui-myeong searches for the girl, she plans a counterattack in the background.
Hyun-su and Eun-hyeok arrive at the stadium, splitting up to find Ui-myeong. During the great escape, Sergeant Tak commits the ultimate sacrifice.
In their battle to stop Ui-myeong, Hyun-su and Eun-hyeok confront the girl head-on — getting an assist from an old friend. Will they finally succeed?