Star Trek: Voyager: Season 4, Episode 6

4 - 6: The Raven

Seven of Nine's Borg implants begin regenerating after she experiences hallucinations and flashbacks from her life before assimilation. She flees Voyager in a shuttle to attempt rejoining the Borg. After escaping into a region of space governed by the B'omar, she discovers a wrecked Federation spaceship on an uninhabited moon. This ship is the Raven where the Borg assimilated her and her parents 20 years ago.