1x01: 1-23-45
Chernobyl
1×02: Please Remain Calm
1×03: Open Wide, O Earth
1×04: The Happiness of All Mankind
1×05: Vichnaya Pamyat
Plant workers and firefighters put their lives on the line to control a catastrophic April 1986 explosion at a Soviet nuclear power plant.
With untold millions at risk, Ulana makes a desperate attempt to reach Valery and warn him about the threat of a second explosion.
Valery creates a detailed plan to decontaminate Chernobyl; Lyudmilla ignores warnings about her firefighter husband's contamination.
Valery and Boris attempt to find solutions to removing the radioactive debris; Ulana attempts to find out the cause of the explosion.
Valery, Boris and Ulana risk their lives and reputations to expose the truth about Chernobyl.