The fourth season of Star Trek: Discovery takes place about 3 years after the events of the previous season. The USS Discovery, now under the command of Captain Saru, has been on a mission to explore the unknown reaches of the galaxy.
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As the season progresses, the crew of the Discovery must navigate through time and space to prevent the Eternity Engine from falling into the wrong hands. Along the way, they encounter old friends and foes, including a now-retired Admiral Burnham, who provides strategic guidance from Starfleet headquarters. star trek discovery season 4 vietsub extra quality