In an episode that revisits Janeway's first day aboard the U.S.S. Voyager and then fast forwards 500 years beyond it when her ship is destroyed, Captain Braxton of the 29th century Federation Timeship Relativity contacts Seven of Nine to go back in time to solve the mystery of who planted the "temporal disrupter" which ultimately destroyed the U.S.S. Voyager. But when the new starship captain, Janeway, catches the mysterious Seven aboard the brand new U.S.S. Voyager, she detains her, an interference that could contaminate the time-line.

Bruce McGill (Captain Braxton)
Dakin Matthews (Admiral Patterson)
Jay Karnes (Lieutenant Ducane)
Josh Clark (Lieutenant Joe Carey)

• Assistant Chief Engineer Joe Carey is seen in engineering on Janeway's first day, flirting with (Ensign) Seven and later speaking with Captain Janeway. This is his first appearance since episode #11: "State of Flux".
  
• Seven mentions the events that took place in Star Trek: First Contact when the Borg attempted to stop Zefram Cochran's warp drive launch.
  
• Relativity scans show that the weapon was planted by Species 329, The Kazon. It's actually a future version of Captain Braxton, who is suffering from temporal psychosis and blames Voyager.
  
• Captain Braxton was first introduced in the 3rd season 2-parter "Future's End, Part I"; however, he was played by Allan Royal.