Derelict

Something has been found at the bottom of Earth's ocean. An ancient artifact that can only be described as a giant door, inset into the ocean floor. But some doors should never be opened..

After a cataclysmic tide surge hits Fathom base, Dr. Eva Graff learns that commander Joe Freeman is hurt and stuck in a slowly flooding circuitry conduit, she sets off alone on a perilous journey to save him.

Dr. Eva Graff finds herself in her most precarious situation yet: trapped in the rubble of the collapsed western Control capsule, lost and alone, she must deal with the major revelation about the events that have transpired on Fathom base.

Dr. Eva Graff and Brynn Emerson have barely survived their ordeal on the Vault. In order to save what's left of Fathom base, the two women must work together to stop a dark event from occurring on the abandoned Southern platform.

Set during the events of Episode 2, Agent Blayne and Dr. Sarah Klayton struggle to survive outside and inside Fathom's North Platform after Mack's true nature is revealed, an unexpected tide surge wreaks havoc, and loyalties are tested

Trapped and hunted on Fathom's North platform, Sarah Klayton and Agent Blayne are faced with a difficult choice: escape while they can...or enact a desperate plan to destroy Mack before he can do more damage.And with the death of Joe Freeman still fresh in her mind, Sarah finds walking away, even if it means survival, a very difficult decision to make.

The Vault has been opened - With time running out, Blayne and Klayton and survivors from the West Platform set out for Fathom South, which has somehow mysteriously regained power.

With the true horror of the Vault revealed, the survivors must reach Fathom South to try to contact the surface for rescue, and to contain the dangerous technological contagion that is quickly spreading through the remains of the base.

Sarah Klayton, Agent Blayne, and an isolated Dr. Eva Graff, enact their last, desperate plan to try and contain the technological contaminant that is ever more quickly spreading through the remains of the base

The season finale of FATHOM. Deals are struck. Sacrifices are made. Choices become permanent. Some doors should never be opened. FATHOM is created, written, and directed by J. Barton Mitchell; produced by Elizabeth Laidlaw, Kirsten Rudberg and Thomas Barker; features original music by Luke Atencio, Ryan Taubert, Bytheway-May, David A. Molina, and Zachary David; sound design and editing by J. Barton Mitchell; additional sound design by Music Radio Creative.