A man living in the 23rd Century works at a remote "lighthouse" in space that serves as a beacon to help passing ships.
Cast:Stephan James , Natasha Mumba , Lena Headey , Eric Lange , Wade Bogert-O'Brien , Ellen Wong , Bo Martynowska , Marc Menchaca , Noah Lamanna , Tenika Davis , Jess Salgueiro , Stephen Root , Daniel Malik , David Tompa , Matilda Legault , Dylan Taylor , Jeananne Goossen , Hannah Melissa Scott
Returning to Beacon 23, the inhabitants are still trapped under Aleph's watchful eye. After Aster's plan was cut short, Halan decides to see it through.
As punishment for betraying Aleph, Harmony finds herself in the AI liminal space. While under heavy interrogation, Harmony realizes she must find a way to break free of Aleph and find her way back to Beacon 23.
Iris, keeper of Beacon 67, learns of Halan's distress on Beacon 23. Responding to the help signal, she is stunned by the Beacon's disrepair. As they repair the beacon, a strange occurrence leaves them confused and terrified.
When Halan and Iris get to the airbridge, the ship is empty but there's a chill in the air. Iris desparately tries to piece together what happened to the pilot, while Harmony deals with a rogue AI who followed her to Beacon 23.
After being pulled from the pocket universe, Dosto is strangely elusive about the whereabouts of his crew. When they get another distress call, Halan and Iris rescue the remaining crew but tensions rise when they see Dosto is also onboard.
Beaconkeeper Jocko welcomes a new trainee, a teenage Aster. The two develop a shaky but functional rapport, but Aster senses Jocko is hiding something. After tracking down source of strange noises on the beacon, Aster must confront Jocko.
Imprisoned by the Sybarrans, Halan and Iris must work together to reclaim the beacon; Halan's past catches up to him.
After agreeing to receive an implant, Halan is surprised to find that the procedure puts him face-to-face with Aleph; Harmony protects the beacon by any means necessary.