

Season 1
A deserted Moon base. A deadly mission.
Synopsis
Earth has run out of fresh water. The Silent Sea (2021), Season 1 — watch online on iFILM — is a Korean sci-fi thriller from Netflix: eight episodes, an abandoned moon base, and a 24-hour window to get in and out.
Getting to Balhae Lunar Research Station is the first obstacle. What the crew finds inside is worse. Their findings contradict the mission briefing from the start. One member develops symptoms of an infection the team has never seen. The deeper they go — restricted storage areas, a double-crosser, a child loose in the ventilation ducts — the clearer it becomes that the facility's secrets were meant to stay buried. Astrobiologist Song Ji-an has a personal stake: her sister worked at Balhae, and a recovered hard drive reframes everything Ji-an thought she understood about why they were really sent here.
Bae Doona and Gong Yoo keep the tension controlled and credible across all eight episodes. The series originated as a short film with the same premise. Stream The Silent Sea Season 1 online on iFILM.
8 episodes
S1·E1Balhae Lunar Research Station
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
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
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
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
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
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
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
Racing against time as the research station falls under destruction, the surviving crew members decide on the fate of the mission — and their own.
1 seasons
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