Star Trek: Voyager (1995)

S03E02 Flashback

Stardate: 50126.4. Tuvok finds himself suffering from a mysterious illness linked to a buried memory, prompting him to initiate a mind-meld with Captain Janeway for his survival. This psychic connection transports them back to Tuvok's past, revealing his time as a junior science officer on the U.S.S. Excelsior, where he served under Captain Hikaru Sulu's leadership.