Seasons & episodes

S1 · E1Balhae Lunar Research Station 7.5 / 10 · 1 published rating 2021-12-24 · 51 min＋

Director Choi's briefing about the mission leaves Song Ji-an displeased. Reaching the research station alone proves no easy feat for the crew.

S1 · E2Three Storages 7.3 / 10 · 1 published rating 2021-12-24 · 47 min＋

The crew's initial findings are at odds with their knowledge of the research station. Split into threes, the members set out to look for the sample.

S1 · E3Cause of Death 7.3 / 10 · 1 published rating 2021-12-24 · 48 min＋

Ji-an's body cam captures a startling moment of life and death. Submerged in sweat, Gong Soo-chan shows worrisome signs of an unusual infection.

S1 · E4The Truth Comes Out 7.2 / 10 · 1 published rating 2021-12-24 · 45 min＋

Han Yun-jae updates the director and gets access to a restricted area. The crew learns of the sample's powers and the true motive behind their mission.

S1 · E5Secret Storage 7.1 / 10 · 1 published rating 2021-12-24 · 40 min＋

Recalling her sister's encrypted message, Ji-an searches the database for Luna. A young intruder and a double-crosser emerge from the shadows.

S1 · E6Key to Salvation 2021-12-24 · 44 min＋

E2, Ryu Tae-suk and the samples go missing. Seeing a familiar name on the intruder, Ji-an follows her down the vents for answers.

S1 · E7Luna 7.4 / 10 · 1 published rating 2021-12-24 · 40 min＋

Ji-an opens a hard drive that chronicles Song Won-kyung's life and work on the station. Meanwhile, others uncover the remains of the experiment.

S1 · E8The Silent Sea 7.4 / 10 · 1 published rating 2021-12-24 · 48 min＋

Racing against time as the research station falls under destruction, the surviving crew members decide on the fate of the mission — and their own.