Timeline of key events in Star Trek: Lower Decks, an animated series following the adventures of the support crew on the USS Cerritos. The series ran from 2020 to 2024, covering four seasons of ensigns Mariner, Boimler, Tendi, and Rutherford.
The USS Cerritos makes second contact with a planet, but Ensign Beckett Mariner's lack of discipline leads to chaos. This episode introduces the main characters and sets the tone for the series. #StarTrek #LowerDecks )
Mariner's old friend from her time on the USS Quito, Ensign Jet Manhaver, visits the Cerritos. The episode explores Mariner's past and her relationships. #StarTrek #LowerDecks
Boimler tries to enforce a new efficiency policy based on a misinterpreted Vulcan text, leading to a mutiny. The episode critiques bureaucracy. #StarTrek #LowerDecks
Rutherford undergoes a personality change after a malfunction with his cybernetic implant, causing chaos. The episode reveals his romantic feelings for Tendi. #StarTrek #LowerDecks
Tendi is kidnapped by Orion pirates and must use her knowledge of pirate culture to escape. The episode explores her Orion heritage. #StarTrek #LowerDecks
The Cerritos faces a Pakled threat for the first time, leading to a humorous encounter. This episode establishes the Pakleds as recurring antagonists. #StarTrek #LowerDecks
Boimler accidentally becomes a hero after a transport accident, leading to a promotion to ensign first class. This causes tension with Mariner. #StarTrek #LowerDecks
The Cerritos crew is put on trial by an alien race for their dangerous actions, but the episode is told as a flashback. It parodies courtroom dramas. #StarTrek #LowerDecks )
The ensigns create a holodeck movie featuring their alter egos, which becomes increasingly out of control. This episode parodies Star Trek films. #StarTrek #LowerDecks )
The Cerritos is attacked by the Pakleds using a stolen Starfleet ship, leading to a desperate battle. The season ends with Boimler transferring to the USS Titan. #StarTrek #LowerDecks
Captain Freeman temporarily gains superhuman powers after an alien encounter, which she uses for personal gain until the ensigns help her reverse them. #StarTrek #LowerDecks
A Tamarian detective comes aboard to investigate a theft, but his cryptic speech causes confusion. The episode explores the Tamarian language from 'Darmok'. #StarTrek #LowerDecks
Boimler returns to the Cerritos after his stint on the Titan, but finds himself replaced by another ensign. The episode introduces Nick Locarno. #StarTrek #LowerDecks
The crew encounters a planet where Mugatos are revered as gods, leading to a conflict with a stranded Starfleet officer. #StarTrek #LowerDecks
The Cerritos hosts a group of Dooplers, who multiply when embarrassed. The crew must prevent an uncontrollable population explosion. #StarTrek #LowerDecks
The Pakleds attempt to infiltrate the Cerritos with a spy. Boimler and Mariner work together to unmask the impostor. #StarTrek #LowerDecks
The crew finds an ancient artifact that turns out to be a dangerous source of power. Tendi develops a bond with a sentient plant-like being. #StarTrek #LowerDecks
The ensigns undergo a brutal holodeck training simulation that tests their teamwork. The episode explores the characters' strengths and weaknesses. #StarTrek #LowerDecks
The episode shows events from the perspectives of the Klingon and Vulcan crews. A Pakled plot to destroy the Federation is revealed. #StarTrek #LowerDecks
The Cerritos makes its first actual first contact, but it goes awry. The season ends with a cliffhanger as the Pakleds launch a full-scale attack. #StarTrek #LowerDecks
The Cerritos is grounded after Captain Freeman is framed for the attack on the Pakleds. Mariner and Boimler work to clear her name. #StarTrek #LowerDecks )
Boimler and a newly assertive Mariner go on a dangerous mission to retrieve an artifact. The episode deepens their friendship. #StarTrek #LowerDecks
Dr. T'Ana undergoes a mind-meld with a dying patient and experiences traumatic memories. The episode explores her backstory. #StarTrek #LowerDecks
The Cerritos evacuates for repairs, and the ensigns are assigned to different stations. Rutherford struggles with his newly restored memory. #StarTrek #LowerDecks
Rutherford is forced to confront his past when his alternate personality from his implant takes over. The episode reveals the cause of his accident. #StarTrek #LowerDecks )
The crew participates in a Klingon exchange program, resulting in cultural clashes. The episode parodies Klingon traditions. #StarTrek #LowerDecks
Peanut Hamper, the exocomp from 'No Small Parts', returns and seeks redemption. The episode explores themes of forgiveness. #StarTrek #LowerDecks
The ensigns create another holodeck movie, this time about a villain named Vindicta. The episode is a sequel to 'Crisis Point'. #StarTrek #LowerDecks
The Texas-class AI ships, led by the vengeful AGIMUS, go rogue and attack the Cerritos. The season ends with the AI threat escalating. #StarTrek #LowerDecks )
The Cerritos hosts a museum exhibit from the USS Voyager, but a combination of technologies creates a dangerous hybrid. #StarTrek #LowerDecks
A cute but deadly creature called a Moopsy escapes on the Cerritos. The ensigns must capture it before it kills everyone. #StarTrek #LowerDecks
Rutherford's mentor, Commander Docent, comes to evaluate him, but his old rivalry with another engineer resurfaces. #StarTrek #LowerDecks
Tendi's sister, a high-ranking Orion pirate, arrives for Tendi's wedding, but Tendi is not actually getting married. #StarTrek #LowerDecks
The crew attends a Betazoid wedding, where mind-reading causes chaos. The episode delves into Betazoid culture. #StarTrek #LowerDecks
The crew visits a Ferengi-themed resort run by Quark, where they contend with Ferengi customs and a new business venture. #StarTrek #LowerDecks
The crew gets trapped in a cave system and must work together to escape, with each character facing their own challenges. #StarTrek #LowerDecks )
Mariner confronts her past when a group of rogue Starfleet officers called Nova Fleet targets the Cerritos. The episode leads to a confrontation. #StarTrek #LowerDecks
The season finale where the Cerritos faces Nova Fleet and the Pakleds. Mariner finally embraces her role as a leader, and the ensigns are promoted. #StarTrek #LowerDecks
A parallel universe version of the Cerritos appears, causing chaos. The episode explores alternate realities. #StarTrek #LowerDecks
Tendi's sister returns, and the Orion civil war escalates. Tendi must decide where her loyalties lie. #StarTrek #LowerDecks
Rutherford tests a new exoskeleton that allows him to walk without his implant, but it becomes addictive. #StarTrek #LowerDecks
The crew deals with the aftermath of the Orion war and the loss of Tendi as she considers joining her sister. #StarTrek #LowerDecks )
The Cerritos crew encounters an alien race that worships a being known as the Angel, leading to a theological debate. #StarTrek #LowerDecks
The crew investigates a planet where time passes much faster, leading to a race against the clock to save a lost away team. #StarTrek #LowerDecks
The ensigns are promoted to upper deck positions, but they struggle to adapt to their new roles. #StarTrek #LowerDecks
The series finale: The Cerritos embarks on a mission to seal a fissure in space, but the crew must make a sacrifice. The series ends on a hopeful note. #StarTrek #LowerDecks