Olympius - an Imperial feudal world ripe with human life. Olympius was colonized many thousands of years ago. The star system’s unique character and Olympius’ dense atmosphere allow for the cultivation of incredibly rare and valuable crops, medicines that are found in precious few star systems, and never in such abundance as on Olympius. The planet’s feudal families all serve the planetary governor installed with the first colonial settlements. Extreme rationing of foods and fuels went into effect under the custodiam protocols; even travel within the Naxos system became extraordinarily difficult, as there was no certainty when resources would become available again. They have accumulated vast stores of their medicinal crops, eighty-seven years of harvest dried and held in massive subterranean silos, a treasure of unimaginable wealth almost useless to the starving Olympians who live above. The faith of the Olympians has been sorely tested during The Long Storm, the people have endured civil strife, purges, starvation, and death, and their loyalty to their governor, the ruling families, and the Emperor is near the breaking point. It would be easy for a hero, or a villain, to step into such a breach.

Ephesia - an Imperial fortress world with secret defenses. Ephesia, an Imperial fortress world, its naval power once projected force in every direction and for thousands of years it has served as a gateway to the Eastern Fringe. Its stoic Imperial garrison maintained a watchful eye on the skies of the Naxos system, its guns ever vigilant against enemy incursion. During The Long Storm, the guns at Ephesia have fallen into disrepair and the garrison ceased its military drill simply to survive on the meager foodstuffs brought from Olympius. Morale and preparedness have suffered as resources for maintenance and repairs dried up decades ago. Eighty-seven years without reinforcement, the defenders’ numbers are depleted to 10% of the original garrison. Today Ephesia is manned by conscripts from Olympius, men who have never known strict military drill, they are men who have done what they can to preserve the fortress world, but their purpose all their lives has been to survive at all costs. Without resupply Ephesia is more of a memento to fallen Imperial grandeur than it is a fortress. To everyone except the garrison’s ancient senior officers the Imperium is a thing that they’ve hardly known. It will take more than an Imperial badge of office to command their loyalty.

Arghos - an untamed world, rich with various Xeno life. Arghos, once a prospect for colonization it has since been mostly abandoned by the humans in the Naxos system. Though not technically a death world, it would pass for one in the eyes of most Imperials. Dense jungles stretch for miles, always coated in a thick fog, making navigation incredibly difficult. Great riverways have cut large valleys in the planet, creating vast hunting grounds for extremely deadly predators. The light tricks of Tritos and the planet’s short day cycle have given way to the system’s most bizarre flora and fauna, creatures that scurry to find any hint of starlight, others that scavenge the shadows, and still others that lay in wait for days waiting for prey. Arghos is home to a few geneticists, seeking ways to harness such creatures in the service of the Imperium, but they’ve lost more of their own in the field than they’ve ever brought back for research. Most of the planet remains unmapped today, but there are undeniable reports of nomadic tribes that remain hidden in Arghos’ sprawling jungles, elusive survivors that have lived within the fog for eons, long before the Imperium ever claimed Arghos for its own.

Haades - a world from the warp, dedicated to Khorne. Haades, once a dry, red world, it has changed over the past hundred years. Its once dormant sands have reacted to the warp storm. Sterile as it was, Haades was rarely surveyed by Imperial forces, and the travel restrictions under the custodiam protocols have made recent investigations impossible. For years, the warp storm beat down upon the sands of Haades, stirring planetary gales and breaking its tectonic plates. The planetary tides moaned and wailed under decades of ceaseless assault. And from nothing, emerged something. At first it was less than a whisper, then it was a scream, and then it was a roar as the servants of Khorne climbed out of the wastes. Stirring the tides of immaterium, the Blood God delivered at first few, and then many servants, cultists by the thousands began the long and arduous work of building a world in the service of Khorne. A fortress from which they would spill blood across the Naxos system.

Titus - A hidden moon, rumored in the possession of the Inquisition. Titus, a hidden moon in the perpetual shadow of Olympius, and home to a small Imperial presence. Most Olympians known very little about the Imperial garrison at Ephesia, and they know even less about the work on Titus. Shuttles rarely visit the moon, and only a handful of military officials ever make the trip. But beneath the moon’s surface lies an ancient secret, studied and guarded by agents of the Inquisition. They labor year after year to understand the fossils hidden within Titus’ crust. These artifacts predate human spaceflight by eons, they predate Eldar spaceflight by millennia. In subterranean vaults far below the surface these researchers struggle endlessly to find the origins of their subjects. Even amidst the long storm their work continues, ever mindful of the stakes that weigh upon their shoulders, the worlds that might be saved by the technologies that they discover.

Vestia - a small Eldar craftworld, recently from the webway. Vestia, a lesser Eldar craftworld, has emerged in the wake of The Long Storm. Whether Vestia emerged from the webway to hide in the eye of the warp storm or to lie in wait, it is impossible to know. No one knows how long it has lingered in the system’s core, but for perhaps decades it has hidden within the blinding light of Tritos, invisible to Imperial sensors. But now its engines have powered to life, and the craftworld is on the move, perhaps to flee to a new haven, perhaps to hunt new prey.

Kharon - a lifeless asteroid, with Necron energy signatures. Kharon is a minor planetoid, caught in a belt of asteroids that orbit Tritos in a long ellipse. Originally surveyed thousands of years ago, before the first settlements in Naxos, Kharon was thoroughly unremarkable among thousands of similar asteroids. To the best of the humans’ knowledge, nothing has traveled to or from Kharon since humanity arrived in the system. And yet, in the wake of The Long Storm, Kharon glows with faint but undeniable signals. Sensors have captured a binary transmission, repeating every few hours. The code is indecipherable without its key. Whether it is a beacon or a warning, it cannot be known, Kharon is far too close to Tritos at this stage of its orbit; travel would be incredibly dangerous to anything except well shielded military vessels.

Phurie - a moon of Chaos Undivided, with mysterious cults and shrines. Phurie is a moon of the Khorne planet Haades. Sycophants to the Chaos gods followed the warp tides, led by Khorne who has claimed Haades for his own. Relegated to the inhospitable moon of Phurie, the servants of Chaos have nonetheless began to craft the planet into a sprawling shrine of the foul gods, constructing temples in tribute to each god of Chaos. While the Imperials struggle to muster their forces after The Long Storm, Chaos has grown strong and now seeks to spread its corruption to the Imperial bastions of Olympius and Ephesia, to claim those planets’ riches for Chaos united, undivided.

Space Hulk Khrate - a space hulk giving off large amounts of radioactive energy. Space Hulk Khrate was deposited from The Long Storm’s tides unceremoniously into the outer rim of the Naxos system. It is in free fall trajectory towards the system’s core. Khrate is a massive amalgamation of craft, unmistakably human in design but beyond the records of any Imperial vessel known to the navigators on Ephesia. No one knows what secrets or what dangers thrive on the massive derelict, but to those with the power to seize such a prize, there is no danger too great.

Orbital Station Atena - an Imperial station with Mechanicum experiments. Station Atena is held in a stable Lagrangian orbit opposite Ephesia on the far side of Tritos. Atena holds drydocks for Imperial vessels including an extensive naval arsenal. Manned by agents of the mechanicum, Atena is spartan and devoid of even the simplest human comforts. Its denizens prefer the quiet hum of electronics and the roar of machinery as they go about their endless work. The mechanicum aboard Atena went into a mechanical slumber to save their resources during The Long Storm, and now they awaken to begin their work anew.