As the Imperial Remnant and the Galactic Alliance retake territory and press towards the Core Worlds, Admiral Arlan Lassiter reports in about an emergency message coming from the newly captured Gyndine system. The Sunsetter Knights, summoned by Minister of Intelligence, Hogrum Chalk, are asked to investigate their old haunt.
Slipping past the failing planetary shields, they land in a borrowed battle-tank with as much military support as they can pack inside — ready for trouble. The planet is overwhelmed by a Vong spore infection gone wild, and huge, mutant creatures roam freely, terrorizing the few, ailing survivors. Q and a small strike team bypass the outer gates thanks to Oro’s power droids and enter the abandoned laboratory.
Inside, they search for clues, fighting off Vongspawn Mutants and descending, level by level, seeing the ruins of the place they once called home. Finding a lone survivor trapped in a room and surrounded by creatures, they come up with an explosive plan. A cluster of bombs is snuck into an adjacent room, detonated to draw the creatures close, and followed up with a volley from Sapphire Soto who is manning the tank guns just outside the window. All too easy.
Finally free after weeks of surviving, Major Lin Mendalson emerges to tell the tale of a planet abandoned by its Sith caretakers and a massacre born of negligence. With his health quickly failing, Dox, Rend Vando, and the team come together to perform a medical miracle and purge the infection from their only remaining ally from their time on Gyndine. Secure and safe in the tank’s airlock, they leave their moustached friend to continue the search.
Deep below the lab, they find a secret chamber, grown with Vong-tech into the very bedrock — a secret facility more alchemical than scientific, more for torture than for learning. There, they discover the mastermind behind the “Omega Red” virus, Darth Maladi, and two samples left behind in her escape from the dying world. From her research archives, they learn that the mystical substance within can kill all life on a world in a matter of breaths!
Back on Bastion, Roan Fel, the One True Emperor, contemplates the final push to Coruscant, and his own destiny. Chalk is convinced that the “Omega Red” guarantees victory over the Sith, but Fel is not so certain and leaves the fate of the Galaxy up to his Knights. Will they risk failure in the final battle to stay true to the Light Side, or will they use the virus to kill one trillion sentients in order to save countless more. Knowing each other’s weaknesses, Solis Javliin and Oro both conspire to steal the vials from one another, leaving fakes behind. Unaware of the thefts, the rest of the Sunsetter Knights plan their end game.
On Coruscant, heart of the Galaxy, the spies slip into their final disguises — only victory or death awaits. The Sith government have called together all allies for a great gathering, and the heroes plan their attack for the opening ceremony. Safehouses and caches of supplies are arranged, information gathered, and rumors spread. Their deadly weapon is injected into the fire-suppression system, and aerosol canisters are prepared. All seems in order, but just as the elite begin to gather upon the gardened plaza, several notables appear and threaten to end the gambit — ISB agents Bora Sair and Galen Thune search the crowd for familiar faces, as do old enemies Darth Veklor and The Warden. But the operatives remain covert just long enough for them to do what they do best — chaos.
Emperor Darth Krayt, flanked by his two greatest death-dealers, Darth Nihl and Darth Maladi, appears on the balcony above the gathered crowds. He gives a malice-filled speech on destiny and condemns those who would oppose his dark vision. As he speaks, the Sunsetter Knights release a canister of deadly toxins into the crowd and wait. Tesh Ryon, suddenly spying a familiar face, recognizes with horror that his own mother is in the crowd! He sprints towards Nita Ryon just as the sprinkler systems erupt in a lethal spray. He pushes her aside just in time.
True to their nature, the Sunsetters begin dealing death upon their foes. The weak die instantly, and the apprentices of the Sith fare little better, dropping dead as they run toward the enemy in their midst. But Krayt and his Dark Lord and Lady only laugh. “Fools!,” he proclaims. “Did you think we would not make ourselves immune to ‘Omega Red?’ It was a trap, left for you and your pathetic Emperor to find so that he might be tempted to use it on us. And now he has! But he only slays the weak! Now, he will turn to the Dark Side and be under my power!”
But as the Sunsetters battle on with saber, blaster, words, and wills, the Sith begins to realize that he has been the fool. For the spy team did not use “Omega Red” at all. Instead, they infected the crowd with Vong spores and then used an altered “Final Protocol” in the water to target only those with the illness!
Caught in a trap of their own making, Krayt, Nihl and Maladi begin to succumb to the combination of weaponized virus and relentless attack, dying one after another. Finally, his destiny denied to him, Krayt falls to Govon Inkari’s sniper rifle. The lightsaber of an Imperial Knight removes his head.
Unable to function without the iron-fisted rule of it’s leader, The One Sith begins to fall apart, galaxy-wide. Thousands of systems turn away upon hearing the news, finally able to admit that only fear held them at bay. And though peace seems imminent, one final tragedy awaits. Upon the “Jagged Fel,” Roan Fel’s flagship, one of the samples of “Omega Red” is released, perhaps accidentally, perhaps not, killing all aboard.
With a heavy but wise heart, Princess Marasiah Fel convenes a Triumvirate government as it was before the war began, ruling alongside Admiral Gar Stazi and Jedi Master K’Kruhk. And the Sunsetter Knights go down in history as the most wanted heroes in the galaxy.