A freak accident during an experimental space mission catapults Astronaut John Crichton across a thousand galaxies to an alien battlefield.
Early 20th-century adventurers find themselves fighting for survival after their hot-air balloon crashes into a remote part of the Amazon, stranding them on a prehistoric plateau.
When a full-scale war is engaged by the evil Scarran Empire, the Peacekeeper Alliance has but one hope: reassemble human astronaut John Crichton.