This episode commemorates the 30th anniversary of the hugely popular "Star Trek" franchise and marks the first time a cast member from the classic "Star Trek" series has appeared on "Star Trek: Voyager." The episode also contains references back to the feature film Star Trek VI: The Undiscovered Country.
While The Doctor and Kes monitor them, Janeway and Tuvok delve deep into the mind-meld. Tuvok attends to duties with his then fellow crew members including Commander Janice Rand, while Janeway is an unseen observer. She learns that Tuvok's first deep space assignment, as a junior science officer aboard the Excelsior, was a disagreeable tour of duty for the young Vulcan and sees how it eventually led to his departure from Starfleet over 50 years ago. Janeway also has a chance to see firsthand what her kindred officer, Captain Sulu, chose to do in the heat of battle with the Klingons, led by Commander Kang ("Deep Space Nine").
Tuvok clashes with Sulu over the Captain's orders to make the bold mission to the Klingon Homeworld to rescue Captain Kirk and Doctor McCoy (Star Trek VI) and Janeway gets to "ride shotgun" with a different breed of Starflet officer. Janeway and Tuvok continue with the mind-meld in hopes that it will yield just which repressed memory is causing such a physical reaction in Tuvok - until something goes wrong and without warning, Sulu and the Excelsior crew can see Janeway.
"Star Trek: Voyager" stars Kate Mulgrew as Captain Janeway, Robert Beltran as Chakotay, Roxann Biggs-Dawson as B'Elanna Torres, Jennifer Lien as Kes, Robert Duncan McNeill as Lt. Tom Paris, Ethan Phillips as Neelix, Robert Picardo as The Doctor, Tim Russ as Tuvok, Garrett Wang as Harry Kim.
Guest starring are Grace Lee Whitney as Commander Janice Rand, Jeremy Roberts as Valtane, Boris Krutonog as the helmsman, Michael Ansara as Kang and George Takei as Captain Hikaru Sulu.
The teleplay was written by Brannon Braga and directed by David Livingston.