“Star Trek: Lower Decks” focuses on the support crew serving on one of Starfleet’s least important ships, the USS Cerritos, in the year 2380. Ensigns Mariner, Boimler, Rutherford and Tendi must juggle their duties and social lives. The ship is shocked by a number of sci-fi anomalies. The ship’s bridge crew consists of Captain Carol Freeman, Commander Jack Ransom, Lieutenant Shaxs and Doctor T’Ana. This is the second animated spin-off in the series after “Star Trek: The Animated Series” from 1973-74, but it has a decidedly more mature tone and humor.