Kes begins to go through a transformation to a higher plane of existence. However, this transformation puts Voyager in danger. Kes decides she must leave in order to preserve the crew. But, once transformed, Kes imparts a major gift on Voyager and its crew.
Meanwhile, Seven of Nine fights Janeway's attempt to adjust her back into humanity.
s04e01 - Scorpion, Part II
s04e02 - The Gift
s04e03 - Day of Honor
s04e04 - Nemesis
s04e05 - Revulsion
s04e06 - The Raven
s04e07 - Scientific Method
s04e08 - Year of Hell, Part I
s04e09 - Year of Hell, Part II
s04e10 - Random Thoughts
s04e11 - Concerning Flight
s04e12 - Mortal Coil
s04e13 - Waking Moments
s04e14 - Message in a Bottle
s04e15 - Hunters
s04e16 - Prey
s04e17 - Retrospect
s04e18 - The Killing Game (1)
s04e19 - The Killing Game, Part II
s04e20 - Vis à Vis
s04e21 - The Omega Directive
s04e22 - Unforgettable
s04e23 - Living Witness
s04e24 - Demon
s04e25 - One
s04e26 - Hope and Fear
While chasing a renegade Maquis ship in the Badlands, the USS Voyager and the Maquis ship they are chasing are pulled into a vortex, which sends them instantly to the Delta Quadrant. However, after the destruction of the device that transported them to the Delta Quadrant, the crew of Voyager and the crew of the Maquis ship must join together to fight their way back to their home in the Alpha quadrant, which is many years away. They will meet many foes and many obstacles along the way, but they will also bond as a crew, between those of the Maquis and those of Starfleet.