Director Choi’s briefing on the mission left Song Ji-an with a distinct sense of dissatisfaction. The prospect of reaching the research station alone presented a considerable challenge to the entire crew.

The crew’s preliminary discoveries contradicted their understanding of the research station. Divided into groups of three, they began searching for the specimen.

The body camera footage from Ji-an reveals a stark tableau of life teetering on the edge. Gong Soo-chan, drenched in perspiration, exhibits troubling indications of a peculiar infection.

Han Yun-jae secured an update from the director, which granted him access to a previously restricted zone. The crew then learned of the sample’s capabilities and the genuine purpose driving their mission.

The memory of her sister’s coded message spurred Ji-an to sift through the database for Luna. From the digital depths, a young trespasser and a betrayer revealed themselves.

The E2 samples were gone. Ryu Tae-suk was missing, along with them. A name on the intruder’s uniform sparked a memory in Ji-an, and she followed the figure into the ventilation system, seeking answers in the darkness.

Ji-an accesses a hard drive containing a detailed record of Song Won-kyung’s time at the station, a comprehensive account of her life and endeavors there. Simultaneously, others discover the remnants of the experiment.

With the research station succumbing to destruction, the remaining crew fought a desperate race against time, forced to confront the ultimate question: the mission's outcome, and their own survival within it.