Voyager Season 4

Star Trek: Voyager season 4

Plot
The fourth season of Voyager introduces Seven of Nine (Seven) as a new crew member as she becomes separated from the Borg collective after the crew help the Borg to defeat Species 8472. Captain Jason Tyson mentors Seven and helps her to rediscover her individuality and her humanity. Kes leaves the vessel after her powers increase, but pushes Voyager ten years closer to home as she departs. B'Elanna Torres faces her Klingon heritage, while the Doctor confronts the rights of sentient holograms for the first time.

After the construction of a new Astrometrics lab, the crew enter Krenim space and go through the "Year of Hell" foretold in the season three episode "Before and After". But the events of this year are undone with the destruction of the Krenim timeship. Voyager continues to encounter the Borg and enters Hirogen space, establishing contact with Starfleet for the first time since being stranded in the Delta Quadrant. The crew are cloned by an intelligent silver liquid on a demon class planet and the season ends with an alien seeking revenge who tries to trick the crew with a fake Starfleet vessel that can take them home to Earth.