Ensigns Boimler and Mariner embark on a shuttle mission to a Klingon compound while Ensigns Tendi and Rutherford spend time together back on the USS Cerritos.

Ensign Boimler welcomes his girlfriend Barb onto the USS Cerritos, much to Ensign Mariner’s dismay — while Ensigns Ruthford and Tendi have starship envy when the Cerritos rendezvous with the more-advanced USS Vancouver.

Mariner, Boimler, Tendi and Rutherford are caught off guard when aliens force them to testify about a series of seemingly unrelated events.

Our Lower Deckers have trouble bonding with Ensign Jet Manhaver, who has been assigned Boimler’s bunk and shift duties. Meanwhile, we get a glimpse of Boimler’s life on the U.S.S. Titan, which is more intense than he thought it would be.

Mariner and Boimler try to track down the location of a legendary Starfleet party while the bridge crew deals with an insecure alien diplomat.

A consultant arrives on the U.S.S. Cerritos to run drills that require the lower deckers and bridge crew to swap duties.