Hyun-su awoke to discover Sang-wook had formulated a fresh objective for them both. Elsewhere, Lee Eun-yu and Ji-su managed to flee a brutal evacuation, seizing control of their intended route forward.

A fleeting clue to Eun-hyeok's destiny surfaced for Eun-yu during her travels. Meanwhile, Hyun-su discovered, through experimentation, that he possessed a unique influence over another creature.

Driven by a desperate search for her missing husband, Yi-kyung uncovers a disturbing truth. Meanwhile, the injured Ji-su and Eun-yu reach a fresh haven, only to find themselves confronting impending disaster.

Seeking refuge beneath the earth, the dwindling group found their stores rapidly diminishing. While still searching for Eun-hyeok, Eun-yu came across a young girl.

A disagreement flared between Sergeant Kim and Master Sergeant Tak, each holding firm views on safeguarding their soldiers. Meanwhile, a veiled young woman drew near to Eun-yu, presenting her with a tempting proposition.

Eun-yu pursued Yi-kyung and the girl, closely followed by Park Chan-yeong. A growing unease settled over the stadium as reports surfaced of deceased survivors and a soldier vanished without trace.

Eun-yu and Hyun-su’s reunion was brief and strained. As the platoon set out to find the lost soldier, a monstrous danger emerged at the stadium.

With death looming over Yi-kyung, a young girl desperately attempts to rescue him. Amidst the shattered remains of the laboratory, the soldiers uncover further survivors—individuals whose appearances belie their true nature.