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Season guide

Star Trek: Lower Decks: Season 3

10 episodes Premiered Aug 25, 2022 Updated Oct 29, 2026

Season three of Star Trek: Lower Decks continues the adventures of the support crew serving aboard the U.S.S. Cerritos, one of Starfleet's least important vessels. Set in the year 2380, the narrative follows Ensigns Mariner, Boimler, Rutherford, and Tendi as they navigate the complexities of their professional duties and personal social lives. The season begins by addressing the resolution of the cliffhanger finale f

Previously on Star Trek: Lower Decks

Season 3 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ The series follows the support crew of the U.S.S. Cerritos, a ship considered one of Starfleet's least important.
  • ⚡ The main characters are Ensigns Mariner, Boimler, Rutherford, and Tendi.
  • ⚡ The show is set in the year 2380 within the Star Trek Universe.
  • ⚡ The crew must balance their daily Starfleet duties with their social lives while encountering frequent science fiction anomalies.
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Season overview

Season three of Star Trek: Lower Decks continues the adventures of the support crew serving aboard the U.S.S. Cerritos, one of Starfleet's least important vessels. Set in the year 2380, the narrative follows Ensigns Mariner, Boimler, Rutherford, and Tendi as they navigate the complexities of their professional duties and personal social lives. The season begins by addressing the resolution of the cliffhanger finale from the previous season. Throughout the third season, the ensigns are presented with a variety of challenges that test them in unexpected ways. As the crew maintains the ship, they frequently encounter a multitude of science fiction anomalies that rock the U.S.S. Cerritos. This adult animated science fiction series, created by Mike McMahan, remains part of the expanded Star Trek Universe. The season maintains the established tone of the series, blending comedy with the science fiction elements inherent to the Star Trek franchise. The ensigns must balance their responsibilities within the hierarchy of Starfleet while dealing with the unpredictable nature of their assignments, ensuring that the ship remains operational despite the recurring threats and bizarre situations they face during their service in the late twenty-fourth century.

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Season 3 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 3 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 3: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

30%
70%
Mytharc (3): Crucial lore & season climaxes
Core (7): Character development & subplots
Side Quest (0): Standalone / filler
S3·E1 Mytharc

Grounded

Aug 25, 2022 · 27 min

Mariner enlists her friends on a rogue mission to exonerate her mother, as Captain Freeman faces a military tribunal for the destruction of Pakled Planet.

S3·E2 Core

The Least Dangerous Game

Sep 1, 2022 · 26 min

On a tropical paradise planet, Mariner questions Commander Ransom on how he structures his away team. Boimler makes a bold career decision.

S3·E3 Core

Mining the Mind's Mines

Sep 8, 2022 · 26 min

On a remote science outpost, stone orbs are bringing fantasies to life. Tendi starts her first day as a Senior Science Officer Trainee.

S3·E4 Core

Room for Growth

Sep 15, 2022 · 26 min

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

S3·E5 Core

Reflections

Sep 22, 2022 · 28 min

Mariner and Boimler work the Starfleet recruitment booth at an alien job fair, Rutherford challenges himself.

S3·E6 Core

Hear All, Trust Nothing

Sep 29, 2022 · 28 min

The Cerritos crew unexpectedly spends a day on Deep Space Nine.

S3·E8 Core

Crisis Point 2: Paradoxus

Oct 13, 2022 · 29 min

Boimler's holodeck movie sequel tries to live up to the original.

S3·E9 Mytharc

Trusted Sources

Oct 20, 2022 · 27 min

A visiting reporter on the Cerritos puts Captain Freeman on edge.

S3·E10 Mytharc

The Stars at Night

Oct 27, 2022 · 30 min

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

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