The Phoenix Initiative is over, and war is on the horizon. Nigel Shirazi, Speaker for the Mercenary Guild, has prepared the guild as best he can, but there was no way for him to plan for the events that are unfolding. An ancient enemy has emerged from the depths of the galactic past, with weapons and strategies unseen since the Great Galactic War. The Kahraman of old are back, and they’ve had five years to fortify their position in the Seeleth system.

Khatash. Home to the Depik—the galaxy’s deadliest assassins. The jungle is so dangerous, even the Depik don’t set foot there lightly. After the Veetanho seized and occupied the planet, the Depik’s allies rallied to retake the world. Bjorn’s Berserkers were among the liberation force. After the allies defeated the Veetanho, and the Depik reclaimed their world, the Berserkers stayed on as a garrison. With the contract nearing its end, Bjorn Tovesson III returns to the world for what he hopes is the last time. Unfortunately, it could be just that.

Heir to one of the leading "Four Horsemen" mercenary companies, Jim Cartwright is having a bad year. Having failed his high school VOWS tests, he's just learned his mother bankrupted the family company before disappearing, robbing him of his Cavalier birthright. But the Horsemen of eras past were smart - they left a legacy of equipment Jim can use to complete the next contract and resurrect the company.

Cartwright’s Cavaliers, one of the legendary Four Horsemen of Earth, have spent years rebuilding themselves to their former glory. Their commander, Jim Cartwright, has also been fortifying Earth’s military so it wouldn’t fall prey to alien invasion again, like it did during the Omega War. But unfortunately, galactic events won’t leave Jim alone. After an attempt on his life which nearly costs him his wife and children, Jim decides it’s time to face the unknown. He will lead an expedition into the 4th Arm of the galaxy and venture into territory nobody has explored for untold eons.

Stolen from Earth forty thousand years ago, Loogdal was remade into the first OogSha—a living weapon wrapped in symbiote armor, engineered to remember every battle across every one of his clones. With Soolah—his first love and fiercest ally—Loogdal must keep his people alive between colliding empires: the ruthless Kahraman and the Dusman, who would burn a planet just to deny its enemies an advantage.