Xander and Jax, who now work for the Earth Confederacy Intelligence Services, find Tierney the fugitive and realize she is looking for a weapon that could destroy the whole universe.
Jax and her companions manage to track down Jax's mother and Tierney to a planet far away in the Hortatius system. They run into a peculiar religious cult.
Jax and the team visit the planet on which Osborn found Jax as a baby. Meanwhile, Ralen goes through a painful loss.
While Jax and her companions search for the alien race that could save the universe, they are haunted by their past traumas and biggest fears.
Xander and Jett are on a mission to rescue Ralen from the intergalactic fight club he became part of. Meanwhile, Jax goes on a mission for Osborn to get information from a Sumi princess.
Xander, Jett, and Ralen aid in protecting a mining colony from pirates. Meanwhile, Osborn assigns a covert mission to Jax.
Xander, Ralen, and Jett find a freight of illegal weaponry on a cargo ship captained by a desperate pilot, and the shipment turns out to be clones of deceased EarthCom soldiers.
Xander, Jett, and Ralen return to Earth to the shock of finding it void of every living being but Jax, who suffers from amnesia.
As a galactic war approaches, Jax and her team have to unite all the races in the galaxy to protect them. Meanwhile. Osborn is haunted by his past.
Jax does her best to save the universe before it's too late while Xander has his own plans.