Arcuuna is a massive brownish gas-giant in the Mid-Rim region, located along a remote finger of a sub-branch of the Corellian Run. Although uninhabited as such, the planet is orbited by a massive space station called Arcuuna Station. The station operates a fleet of large automated scoops that dive through the gas giant's atmosphere, extracting and compressing the atmosphere, before delivering it to the station for Tri-Helium (used in many commercial power generators) processing. The system is otherwise uninhabited; consisting of only some icy asteroids and comets, as well as an extensive array of inhospitable moons and moonlets around Arcuuna.

Arcuuna Station is run by Arakyd Industries, which is supposedly aligned with the Techno Union, and thus technically part of the Separatist Alliance. Chief Executive Dermov, the leader of the Arcuuna facility, had divergent ideological views, and sent a petition to the Republic asking for help to defend the station in return for supplying the Republic with Tri-Helium. Republic Intelligence promptly sent a team to investigate, but they failed to report back (they were murdered by the assassin droid IEEI-901, a Separatist covert agent). In an act of desperation the chief Executive sent a new and more urgent call for aid, this time using an open channel.

A Jedi Knight called Aslar To'ung picked up the call and set course for the station, intending to pose as a freelance prospector in search of work. With the help of his Cerean Padawan, E Leet, he soon found clues pointing towards IEEI-901 (masquerading as a worker droid), but as they prepared to confront the droid Aslar was killed by a sudden explosion. Then the station came under attack by Techno Union warships carrying not only battle droids, but a group of Trandoshan mercs in Separatist employ. Their leader, Colonel Boroosh (an old Trandoshan bounty-hunter turned Separatist), had been sent by General Grievous to claim the station for the Separatist cause. Not only is the Tri-Helium production valuable, but the station once had a much greater resident population manning massive foundries; if these could be re-activated, it would be a great boon to the Separatist plans for this area of space. There was some surprisingly heavy fighting during the assault; it turned out that Executive Dermov had re-activated some old foundries and re-equipped his droids as a makeshift droid army to oppose the Separatist droids! The station also boasted some old, but potent, space-weaponry, enough to blow up one frigate right away and force the other five to back off.

The Jedi Council also got the distress call, and being unaware of Aslar’s intentions, decided to send a Jedi Master to investigate and negotiate with Chief Executive Dermov (enter the Light of Reason and Jedi Master Oona Dio). Expecting some trouble, they sent with her some promising young Jedi warriors, carried aboard a fairly powerful warship backed by a full company of veteran clone troopers. Unfortunately the Jedi ship was ambushed by a Union warship as it approached the station in hyperspace. After a fierce space battle that included droid boarders getting onto the Light, the Jedi were able to disengage and make it to the station.

Spotting a light freighter sitting in a docking bay Master Dio led a team of Jedi and Clones over. Another battle soon ensued – droid forces were aboard the station and had orders to keep the bay clean of enemies. Padawan E Leet and his band of workers and droids raced came to the rescue, falling upon the droids from the rear. Victory was swift and complete. After assessing the situation the Jedi made their way to the Command Sphere – retreat is not an option, the Separatists cannot be allowed to gain control over the station. That would allow them to expand their influence from the Elrood sector and into the Erberus sector, which would again allow them to threaten the Corellian Run (key to the Republic war effort in this region of the galaxy).

Finding the command sphere devastated they hook up with Chief Executive Dermov – in the form of a protocol droid. More machine than man anyway Dermov downloaded his consciousness into a droid body before the destruction of the command sphere. This explains why the station is still making it hard for the Separatist force to reach their objectives. Given the overwhelming number of Separatists there is only one solution – the stations must be destroyed. Dermov knows how – destroy the primary and backup power regulators on the power core, then jam open the power feeds to their maximum setting. That will cause a massive energy buildup in the core that will eventually cascade out of control and take with it the entire station.

Master Oona Dio leads Navik, Jax and the majority of the troopers to deal with the main objective. Meanwhile Janna takes E’tan, E Leet and a couple of clones to the detention area where the Separatists are holding the surviving station crew. After an interesting train ride and a fight with some Trandoshans (who turn out to have swords capable of withstanding lightsaber strikes) the rescue team is captured by the droids. Fortunately they are freed by a militia counterstrike – workers and modified labor droids that refuse to give up. Soon the prisoners have been freed and are herded aboard a train. Destination: the docking bay. Oona and her team have, despite an ambush set by IEEI-901, managed to complete her assignment and the station is set to blow. Unfortunately she was not able to catch the assassin droid and it escapes.

Dermov the droid comes to the rescue again; he’s tracking old IEEI-901 on the station’s internal scanners – the villain is headed for the command sphere. Dermov is certain that he’ll be able to access the station’s main communications array and use it to alert the Separatist warships outside. E’tan and E Leet divert to stop IEEI-901 (and deliver some Republic justice to it). Oona and her team cannot be reached due to interference from the now-unstable core, so the two apprentices must do this on their own. The final showdown takes place in the wrecked command sphere. After surviving a sniper attack and an ambush IEEI-901 makes a critical mistake – he engages the Jedi with Aslar’s stolen lightsaber. Despite his speed, strength and combat training he is no match for the Force.

Well back on the Light of Reason – all the Jedi make it, most of the clones and a fair number of workers and labor droids – there is a complication. With the fall of the command sphere Dermov’s control over the station’s defenses were much reduced, and by now the separatist fleet is surrounding the station. The Light makes a desperate dash for freedom, pursued by no less than three frigates it plunges towards then massive gas giant below. Guided by the Force the little corvette just grazes the top clouds, then slingshots out on the other side. The Separatists are not so fortunate – at least one frigate is sucked down towards the planet’s core even as Arcuuna station blows up, taking with it several more warships and all the Separatist forces aboard. The Light of Reason limps into hyperspace on backups, guided by nothing more than Master Dio’s faith in the Force…