When Voyager finds a planet with much needed deuterium, the bad news is the planet is classified as a "Demon Planet" due to its toxic and deadly atmosphere. After failing in their attempt to beam up the deuterium, Paris and Kim volunteer to go down to the planet and mine the material themselves.
However, both their environmental suits fail, leaving them near passing, as Voyager hurries to rescue them. When they locate the two, both are alive and well, existing on the planet without their suits on! When they are brought back onboard, they quickly find the ships atmosphere is hugging them. Paris and Kim find they can only survive in the planet's atmosphere, something Voyager can't provide all the way back to Earth. But is there a different reason the two can only survive under the planet's atmosphere? The answer shocks the crew.
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.