Story Structure — 5 Plot Phases
A Mission Beneath The Ice
Anna is drawn back into government research and sent to the Kola borehole with Morozov and Mikheev. The team discovers that the public dig site conceals a deep laboratory and a disappearance crisis.
Key Events
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The Failed Vaccine Test — Anna authorizes skipped pre-human testing, and Dr. Zotoff dies after testing the vaccine on himself. Characters: Anna
Location: Soviet research facility
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Morozov Keeps Anna Working — Anna tries to resign, but Morozov persuades her to continue her research. Characters: Anna
Location: Soviet research facility
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The Kola Mission Begins — Morozov calls Anna and orders her to prepare for the secret Kola borehole mission. Characters: Anna, Mikheev
Location: New Year's Eve celebration
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The Hidden Subterranean Laboratory — The team learns that the borehole contains a deep laboratory and that twenty people have disappeared. Characters: Anna, Mikheev
Location: Kola borehole
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The Exploding Researcher — A fleeing researcher survives several shots, detonates a grenade, and leaves samples that quickly decay. Characters: Anna, Mikheev
Location: Kola facility landing area
The Locked Lower Levels
Grigoriev exposes the mission's secrecy and controls access to the lower modules. His decompression escape traps the expedition inside the facility and forces the team to search the Resort module.
Key Events
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Warning From Below — A departing man warns Anna that the team is being lied to and that the lower levels are Hell. Characters: Anna, Mikheev
Location: Facility evacuation area
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Grigoriev Seals The Depths — Grigoriev demands rescue guarantees and reveals that the lower levels have been sealed with changed elevator codes. Characters: Anna, Mikheev, Grigoriev
Location: Elevator platform
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The Decompression Escape — Grigoriev depressurizes the elevator, incapacitates the team, and escapes into the Resort module. Characters: Anna, Mikheev, Grigoriev
Location: Elevator cabin
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Survivors In Resort — The team finds Nikolay and Kira, who were left behind during the evacuation, and Anna tests Kira for infection. Characters: Anna, Mikheev, Nikolay, Kira
Location: Resort residential module
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Grigoriev Flees To Sahara — Grigoriev refuses to surrender the key, is shot, and escapes downward toward Sahara. Characters: Anna, Mikheev, Grigoriev
Location: Resort elevator
The Parasite Awakens
Olga emerges from the heated shaft carrying an aggressive mold infection. Her spores infect Mikheev, Kira mutates, and Anna realizes that heat allows the parasite to spread.
Key Events
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Olga Emerges From Heat — Olga emerges from the superheated shaft without protective gear and is taken to the laboratory for examination. Characters: Anna, Mikheev, Olga
Location: Resort shaft entrance
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Olga's Mold Growths — Olga develops fever and mold-like growths, then releases spores that infect Mikheev. Characters: Anna, Mikheev, Olga
Location: Kira's laboratory
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Kira Mutates — Anna encounters a mutated Kira and uses cold from a fire extinguisher to decontaminate herself. Characters: Anna, Kira, Mikheev
Location: Kira's laboratory
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The Parasite Needs Heat — Anna identifies the mold as an aggressive parasite that needs a warm host to expand beyond the permafrost. Characters: Anna, Mikheev
Location: Resort laboratory
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Morozov Chooses The Weapon — Morozov admits rescue is impossible and chooses to bring the infected Mikheev to the surface for the state. Characters: Anna, Mikheev
Location: Resort facility
Descent Into Sahara
Morozov prioritizes obtaining a biological weapon despite the infection risk. Failed rescue efforts lead the remaining survivors into Sahara, where they discover the fate of the missing scientists.
Key Events
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Morozov Chooses The Weapon — Morozov admits rescue is impossible and chooses to bring the infected Mikheev to the surface for the state. Characters: Anna, Mikheev
Location: Resort facility
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The Rescue Squad Fails — A rescue attempt encounters a large entity; one survivor returns mutilated and kills himself. Characters: Anna, Mikheev
Location: Resort access doors
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Descent Into Frozen Sahara — Nikolay rigs the elevator, allowing the survivors to reach the frozen Sahara module. Characters: Anna, Mikheev, Nikolay
Location: Sahara research module
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The Wall Of Scientists — The survivors find twenty infected scientists melted together and killed by the cold. Characters: Anna, Mikheev, Nikolay
Location: Sahara research module
The Last Containment
Anna retrieves the key after witnessing the fungal super-organism, but Nikolay's ambition and the infected mass destroy the escape plan. Mikheev sacrifices himself, and Anna attempts to end the outbreak.
Key Events
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Morozov Retrieves The Key — Morozov enters the extreme heat to retrieve the key from Grigoriev but fails to return. Characters: Anna
Location: Superheated exterior shaft
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The Fungal Super-Organism — Anna enters the heat, sees the colossal fungal organism, and takes the key from the dying Morozov. Characters: Anna
Location: Superheated exterior shaft
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Nikolay Seizes The Discovery — Nikolay takes the key at gunpoint, wounds Anna's companion, and pursues recognition for discovering the mold. Characters: Anna, Nikolay
Location: Sahara elevator area
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The Mass Of Infected Hosts — A huge mass made from screaming infected hosts attacks and absorbs Nikolay. Characters: Anna, Nikolay
Location: Resort residential module
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Mikheev's Final Sacrifice — Mutated Mikheev stops Nikolay from attacking Anna, then begs her to prevent the infection from reaching the surface. Characters: Anna, Mikheev
Location: Resort elevator
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Anna's Final Detonation — Anna steals a grenade and attempts to destroy herself and the parasite in the cold as the screen cuts to black. Characters: Anna
Location: Kola facility surface
In 1984, a Russian research team goes below the surface to find out what secret the world's deepest borehole is hiding. On their expedition, something unexpectedly gruesome awaits the researchers.