Along with medic Shed Garvey (Paulo Costanzo) and mechanic Amos Burton (Wes Chatham), they are stranded with four hours of oxygen and insufficient fuel to reach the nearest space station.
Because the Knight's airlock has been breached by debris, the crew must wear space suits and vent the ship's remaining atmosphere in order to investigate the outer antenna.
Holden and Burton build an improvised antenna to send a distress call, which is answered by Martian Navy flagship MCRN Donnager.
Detective Joe Miller (Thomas Jane) sneaks into the apartment of pilot and activist Julie Mao (Florence Faivre) to investigate her disappearance.
The episode, entitled "The Big Empty", was written by show creators Mark Fergus and Hawk Ostby, based on the first book of the novel series, Leviathan Wakes, and directed by Terry McDonough.
[1] The episode has received positive reviews from critics, who mostly lauded the show's continuing focus on world-building and its increasing characterization, especially the storyline involving Holden and his crew stranded in space.