Mariner, Boimler and Tendi clash with their arch-rivals: Delta Shift. The Cerritos engineers go on mandatory relaxation leave.

A wayward Starfleet ensign struggles to find a path to redemption.

The Cerritos crew must prove their worth in a mission race.

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.

A trio of Betazoids cause chaos on the Cerritos.

Mariner faces her past.