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Hyun-su gives it his all to bring Yi-kyung’s humanity back. Sergeant Kim faces countless monsters in an effort to make it out alive with his men.

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 the final battle, Hyun-su and Eun-hyeok confront the girl head-on — getting an assist from an old friend. Will they finally succeed?