Focusing on the support crew serving on one of Starfleet's least important ships, the USS Cerritos, in 2380. Ensigns Mariner, Boimler, Rutherford and Tendi must keep up with their duties and their social lives, often while the ship is being rocked by a multitude of sci-fi anomalies. The ship's bridge crew includes Captain Carol Freeman, Commander Jack Ransom, Lieutenant Shaxs and Doctor T'Ana.