The fourth season of Star Trek: Lower Decks finds the U.S.S. Cerritos ensigns being challenged in new ways and given new opportunities, while also learning they’ll be “lower decks” for a long time to come.
The Cerritos ensigns must assist a caretaker on the voyage of a historically significant starship.
Mariner tries to get demoted, Rutherford tries to get promoted, and Boimler makes a big move.
Boimler leads his first away mission on an alien megastructure.
Tendi is summoned back to Orion for a wedding.
A trio of Betazoids cause chaos on the Cerritos.
The Cerritos visits the Ferengi homeworld.
Three computerized villains return to cause problems for the Cerritos crew.
The Lower Deckers go on a classic cave mission.
Captain Freeman assigns the Lower Deckers an overly safe mission to try and keep a self-destructive Mariner out of danger.
Mariner faces her past.
