Tane Rahia is good at one thing - fighting. Before the alien invasion, he fought as a mercenary in the worst jungle hellholes. Now, he’s the leader of Squad Three - a.k.a. the berserkers - and he’s fighting to protect his brothers, his friends, and the last of humanity’s survivors. It doesn’t matter if he dies, he knows he belongs in the shadows, doing the dirty work and taking dangerous risks so others don’t have to. There is no warm woman, no love, and no redemption for him, and especially no small, sweet alien woman who he struggles to ignore.

As the battle against the invading aliens intensifies, a group of bad boy bikers and mercenaries will stand and fight for humanity's survival. Squad Three berserker Dom Santora has an ugly past he can't forget. Born and raised in the darkness, he spent his life before the alien invasion as a Mafia enforcer. And there is no way he'll ever deserve the quiet beauty of a woman like Arden Carlisle. As Dom, Arden, and the berserkers work to find a deadly alien bomb, they uncover the true horror of the aliens' plans.

For Hawk pilot Finn Erickson, flying is in the blood. Since the aliens decimated the planet, he spends most of his time flying Hell Squad into combat. With communication to other survivor bases cut off, he has no idea if his family is still alive and feels their loss keenly. But helping to fight back sustains him, and his quadcopter is the only woman he needs. She doesn't argue with him...unlike a certain redhead who is one hell of a kisser.

In the aftermath of a deadly alien invasion, a spy and a soldier find themselves locked in an alien cage and told...mate or die. A covert mission gone horribly wrong. Cool, composed spy, Devlin Gray is used to bad situations, but locked in the bowels of an alien facility with tough, sexy soldier Taylor and told to mate is bad. Very bad. During his career, he's had to lie and kill, he's been betrayed, and he knows he works best on his own. Now he is forced to depend on Taylor, and together they have to find a way to escape before it's too late...  

Sienna Rossi has always been a mix of contradictions. Sweet and tough, soldier and woman, most people can't seem to make sense of her...even the loving family she lost in the invasion, and especially men. One man accepts her as she is: her best friend, Theron. But the big, silent, muscled soldier has her firmly in the "friends" zone...except that Sienna knows he wants her, and she's determined to claim the stubborn man as hers. 

Levi King has always lived rough. Raised by a biker dad, he fought for everything he had - including being president of the Iron Kings motorcycle club. But when the aliens invaded, he lost it all. Now, he wades through the muck with his fellow berserkers, fighting to protect the last of the human survivors. He fights hard and parties harder and follows no one's rules but his own. But then he finds himself fascinated by a mouthy, auburn-haired mechanic who isn't afraid to give him a piece of her mind.

In the middle of an alien invasion, will the bad boy berserker catch the geeky tech genius? Computer genius Marin Mitchell is doing her part to help humanity survive the raptor invasion, working tirelessly to decrypt alien data. She spends her days working and drooling over a certain tattooed, biker berserker from Squad Three. But Marin knows the rules: geeks do not snag sexy bad boys.

When former berserker Manu Rahia lost his leg on a mission, he was forced to leave his squad. He knows his new role as head of the Enclave's firing range and armory is important, but hates that he isn't still out there fighting face-to-face against the aliens and protecting his brothers' backs. But then one woman catches his eye. A no-nonsense woman dedicated to her job as head of security. A woman who seems cool on the surface, but who Manu is convinced is hiding more under her business-like exterior.

In the aftermath of a deadly alien invasion, a band of survivors fights on....

Hell Squad sniper Shaw Baird is a man on a mission. His squad is his family and now the invading aliens have done the unforgivable...taken one of his team. Claudia Frost - soldier, friend, and all-around badass - is running on borrowed time. Shaw has vowed to bring her home, whatever it takes...and he's only just realizing now she's been taken that Claudia is a vital piece of him.

Roth Masters is a protector to the bone. Driven by the losses of his past, he fights side-by-side with Hell Squad to protect the human survivors of the alien invasion. As leader of Squad Nine, he and his team are known for their perfect timing in a firefight. But Roth knows they need more intel on the raptor invaders - something to turn the tide of the battle. And he knows the woman he rescued from an alien facility is hiding secrets he desperately wants to uncover.

General Adam Holmes' life is dedicated to keeping his small band of survivors alive. On the run, with only Hell Squad and the other soldiers for protection, they are making their last dangerous drive to the secret stronghold of the Enclave. But there are a lot of aliens between them and their destination, and the survivors are tired, worn, and at the end of their limits. Adam feels the pressure dragging him down, but as their leader, he can't be their friend and he can't dump his burden on anyone else.

The battle of survival against the invading aliens heats up...but Hell Squad never quits. As Laura helps Noah on his project, the two are drawn irresistibly together. As they head into the desert with Hell Squad on a mission to a hidden alien outpost, sparks fly and a passionate desire is uncovered. Both are holding onto past hurts, scared to take the risk of loving again...but when the unthinkable happens, it changes everything...and Laura and Noah must find the power to save themselves, their friends, and their love.

As Reed and Natalya wage a sensual battle of desires, they also work together to decipher a mysterious alien energy cube. Hell Squad needs Natalya's expertise and they need her to go back into alien territory to use it. But on a mission to destroy an alien outpost, secrets are uncovered - of what the raptors really did to Natalya. Secrets that mean the future she wants with Reed is just an impossible dream.

From the dangerous desert sands to the deadly glitz of the city, the lawless desert planet of Carthago is filled with lethal cyborg gladiators risking it all for the women who capture their hearts. Guard contains two novellas and one short story, all set in the Galactic Gladiators: House of Rone series.