For Colonel Mulbah Luo and the Kakata Korps, their initial contracts with the Mercenary Guild had them defending Earth. Honest work, they were led to believe, keeping the citizens of Earth safe from alien pacification in their own way. As the occupation continues, however, their eyes are opened to the fact that the hand gripping their throat is slowly tightening.

With Alexis Cromwell shot in the back by her XO and the fleet in ruins, the Humans have run back to New Warsaw to lick their wounds, but the Merc Guild now knows the location of their hidden base, and they are in hot pursuit. Led by the New Era, a dreadnought built for the sole purpose of destroying humanity, they are an unstoppable force.

When Todd’s critically damaged ship dropped out of hyperspace near the human colony world of Azure, he had no memory of his past. He didn’t know who he was, or even what he was, and the humans didn’t either. That didn’t stop the colonists of Azure - they took him in, anyway...even though they didn’t understand how he could do some of the things he could do. Todd and his descendants consider themselves human - eight-armed and water-breathing - but human, nonetheless. After 70 years living among humans, Todd’s descendants are going back out into the Union to make their mark.

After a stunning victory at the Merc Guild shipyard of Golara, the leaders of the Four Horsemen mercenary units of Earth have decided it’s time to take back the colonies the Merc Guild has captured, and the Horsemen split up to liberate them. While the Merc Guild still has humanity outnumbered, Alexis Cromwell, the leader of the Winged Hussars, has incorporated the ships captured in Golara into her fleet, and she hopes the Humans can achieve local superiority across four systems with her new battleships and her Egleesius cruisers.

Bjorn Tovesson III, the owner of Bjorn’s Berserkers, is a man tied to the past but who’s not afraid to innovate. Whether it is new tactics or new equipment, Bjorn is willing to try anything once, in an effort to grow his company into the status of the fabled Four Horsemen. Looking to the future with his eyes open, though, he has seen a series of unfortunate occurrences running through the ranks of Earth’s mercenaries. Companies in financial troubles, some taking huge losses on contracts...and others not returning from their contracts at all. 

From street criminal to war hero. From outcast to Marine officer. The journey has been a long one, but now it’s reaching the end. Cam Alvarez leads his platoon of Drop-Troopers into the Tahni Imperium, into the final days of the war and the bloodiest battles yet. The Tahni will throw everything they have into the defense of their core worlds, and when that includes using their own civilians as shields, Lt. Cam Alvarez will have to decide whether to follow orders and fire on civilians or follow his conscience and risk his caree...

The Peacemaker-enforced ceasefire brought an end to the hostilities, but not a resolution, and now it’s up to the Four Horsemen to forge a lasting peace. Alexis Cromwell, despite her pregnancy, heads off to Capital with Nigel Shirazi to obtain justice from the enigmatic Mercenary Guild Council, but when they arrive, they’re quickly embroiled in galactic politics, and find out the situation is far, far worse than they could possibly have imagined. 

Bjorn Tovesson III, commander of Bjorn’s Berserkers, has returned to Earth. Bear Town is a smoldering ruin, and the Berserkers’ reputation is in the gutter. As Bjorn tries to chart a course for the Berserkers’ future, ghosts from the past haunt him. Meanwhile, the Information Guild and the Union Credit Exchange clash over the future of the Galactic Union’s economy. The Information Guild seeks to eliminate the red diamond standard, giving it sole control of the currency system, but the Union Credit Exchange harbors ambitions to become a guild in its own right. 

Abraham Murdock left his home of Sheridan, Arkansas, at 17 to start a merc career that spanned almost 50 years, working for dozens of companies, killing aliens and getting paid across the galaxy. Near the end of his career, he landed a gig with Cartwright’s Cavaliers. The storied Four Horsemen unit was just coming back from near catastrophe, and the battle-proven Murdock was an ideal choice for their top sergeant. It would have been a perfect last contract, but then his dropship was destroyed in the Chimsa system, killing the flight crew and him. Or did it?

The Peacemaker-enforced ceasefire brought an end to the hostilities, but the Mercenary Guild’s moratorium on new contracts has given the other guilds time - and freedom - to redress long-standing grievances. It has also led to a mindset of “while the cat’s away, the mice will play”, and many are taking liberties they wouldn't have normally. On Earth, the Golden Horde continues to rebuild, because Sansar Enkh has a good idea of what’s coming. 

The plot by the Galactic Union’s Mercenary Guild against the Four Horsemen has culminated in an invasion of Earth. Faced with an overwhelming force, the human mercs had no choice. They’ve fled, leaving Sansar Enkh to go to the Mercenary Guild headquarters on Capital Planet to stand trial for humanity. On the run, Jim Cartwright and Nigel Shirazi have travelled to the Winged Hussars’ secret base of New Warsaw, in an effort to convince Alexis Cromwell to join the fight, while the other mercenaries who escaped the fall of Earth have gone to the perceived safe haven of Karma.

The Omega War is in full swing. Earth has fallen to General Peepo’s army, and the surviving human mercenaries have taken refuge at the hidden Winged Hussars’ base in New Warsaw. On Earth, the defensive forces fight to keep the hearts and minds of their fellow humans, but Peepo’s plans are slowly converting the people to her way of thinking, and the Mercenary Guild troops continue to root out the forces arrayed against them.

Cam Alvarez is a Drop-Trooper. A warrior-knight wrapped in the futuristic armor of a high-tech battlesuit, and he’s one of the best. When he’s promoted to sergeant and asked to become a leader, he faces a whole new challenge. The Marines are striking deep into enemy territory, and the casualties are mounting. Cam is torn, knowing his job is to follow orders and carry out the battle plan, even if he doesn’t agree with it. But his squad has become his family, and now he’s being asked to lead his family into battle, knowing it will mean their deaths. 

For small-time street hustler Cam Alvarez, the choice is simple. He has no family, no friends, no place in the world...nothing to lose. When his latest con results in the death of a cartel hitman, Cam opts to join the Marines and leave Earth to fight a vicious alien enemy.

A lonely planet circles a star on the very border of Province 921. Critical resources produced there are claimed by both the Mogwa and the Skay. War between the Galactic giants becomes more likely every day.