One big cyborg cowboy. One tiny human female. One impossible attraction.

When Jo's partner abandons her as soon as they arrive on Mars, it's yet another reminder of what she has always known: the only person she can count on is herself. But she is determined not to let his absence prevent her from claiming the one thing she has always wanted - a permanent home. Earth Government is offering land to anyone who can work a claim for five years and she isn't going to let loneliness, global dust storms, or a mysterious, attractive cyborg stop her.

C-487 no longer feels human emotions. They have been left behind in the pain of his transformation and the long, lonely years working to make Mars suitable for human settlement. The majority of that work completed, there is little left for him now except making sure that these foolish humans don't kill themselves or each other. Until he sees her - a tiny, determined female who makes his long-forgotten heart beat faster.

Can a woman who is afraid to trust and a cyborg who has forgotten how to love find their dreams together?

A desperate widow in need of a helping hand… even a cybernetic one.

Hattie came to Mars with high hopes. Hopes that she and her husband would be able to claim a plot of land, to create a home, perhaps even to start a family - all of the things that were now impossible on a troubled Earth. Instead, she’s lost everything, everything except the land, and in order to keep her homestead she needs help.

When help arrives in the form of a tall, gruff cyborg ranger, she is torn between her loyalty to the past and the promise of a new future. But when danger threatens, is she going to lose even that?

M-231 can barely remember the time before - before he became a cyborg, before he shut off his emotions, before he became both more and less than human. Until a stubborn, beautiful female - one who is no longer off limits - makes him remember what it is to feel.

Can Hattie and her cyborg overcome harsh conditions, troubled pasts, and a mysterious enemy to create a new future together?

A cynical cyborg. A woman with too many secrets. A shared past that could tear them apart - or bring them together.

S-756 despises all humans, but he hates the scientists who tortured him and turned him into a cyborg most of all. The long years terraforming Mars have only cemented that hatred.

When his duty forces him to rescue an endangered scientist, he is shocked to discover that she is the alluring woman who betrayed him. No matter how much his long forgotten heart rejoices, he knows he can never trust her.

Addie paid a terrible price to save the man she loved. When she encounters him again, she is both thrilled and terrified. Her feelings towards the massive cyborg haven’t changed, but how can she explain what she did, especially when she has another secret to keep?

When a dark plot forces them to collaborate, can they move on from their tragic past and find a new future together?

A gruff older warrior. A hopeful young cyborg. A frightened woman on the run.

J-817 would never forgive himself for the terrible mistake he had made - a mistake which resulted not only in his conversion to a cyborg but caused the same fate for his young private. Determined to atone for his failings, he protects B-669 during the long hard years terraforming Mars and even agrees to try his hand at mining the new planet.

Frantic to get away from Earth, Daisy seizes the opportunity to become part of the Martian mail order bride program, even though it means a dangerous new planet and an unknown husband. She doesn’t expect to find herself married by proxy to a stern older cyborg who refuses to let her close to him, but whose intense gaze creates a storm of longing inside her. And his young partner is just as attractive.

B-669 owes everything to J-817, but the other male is too buried in guilt to accept his gratitude. In an attempt to overcome the trauma of the past, B-669 arranges for a bride for J-817. Despite J-817’s original rejection of the delicate little human, B-669 can see the longing in his eyes when he watches Daisy. It’s just a matter of time before he succumbs. The only problem is, B-669 wants her just as much.

When danger threatens, can they overcome their past fears and learn to live - and love - together in this harsh new world?

A woman with a troubled past. A cyborg with missing memories.

W-246 is one of the last cyborgs sent to Mars to work on the terraforming project. While he doesn't remember how he became a cyborg, he has accepted his new role as a territorial judge. Until he encounters Cherry. He knows he could never forget a woman like her - so why does she seem so familiar?

Madam Cherry is through with men. In her experience, they either use her or break her heart or both. Instead, she concentrates on running a successful business and is content taking care of her girls. Until she runs into Wyatt.

Their brief, passionate marriage ended years ago when he disappeared - killed in the line of duty. Or so she had assumed. Now she finds out that he is very much alive.

The fact that he is a cyborg doesn't bother her; the fact that he doesn't remember her? That could destroy her.

Can Cherry and Wyatt recapture their love in the midst of a budding rebellion, surrounded by dangerous new enemies?

Can a cyborg ranger save Mars - and the woman who won’t admit she needs him?

Everything Serena Gatling ever wanted was taken away from her by a single horrific act of betrayal. Determined never to fall victim again, she closes her heart and dedicates her life to a cold-blooded quest to regain the one thing that still matters to her.

Sent to Mars by the ruthless corporation for which she works, Serena is finally within sight of her goal. The last thing she needs is a man distracting her. But the massive cyborg warrior who seems to know all of her hidden secrets awakens feelings she thought had died long ago.

J-100 has never fit in - not as an orphan, not as a soldier, and definitely not as a cyborg. So when he is asked to take on an impossible mission with little chance of success, he has nothing to lose. Until he meets a beautiful woman and recognizes the pain hidden behind her icy exterior - and now the stakes couldn’t be higher.

Evil forces are conspiring against the Martian colonists. Can Serena and J-100 work together to save the colony, even if it costs them everything?

Can a wounded cyborg help an isolated scientist remember her own humanity?

Dr. Rose Abbott is the cybernetic engineer who created the robot horses used in the efforts to terraform Mars. Disgusted by the way her creations are treated by the GenCon Corporation, she chooses to leave her work behind and live in isolation.

Then one of her horses finds her and leads her to an injured cyborg ranger - one with no memory. She reluctantly decides to take the big male, who she nicknames Roy, back to her home to heal.

All Roy can remember is cold and pain. But the prickly little scientist taking care of him begins to thaw his frozen heart, awakening feelings he never thought to have. He is determined to protect her – even from his unknown past.

With the help of a robot horse and a cybernetic dog, can two wounded souls find peace in each other’s arms? Or will Roy’s past threaten the new life he is hoping to build?

Can a lonely cyborg protect a determined scientist from the dangers of Mars?

Dr. Sadie Tucker has spent her entire life in the pursuit of knowledge. That quest takes her to the wild Martian frontier, where her latest bioengineering project could revolutionize homesteading on the planet. She can’t afford any distractions - even though the big, silent cyborg ranger guarding her reminds her that she is a woman as well as a scientist.

When the military sent Z-384 to Mars, he put his troubled past - and his humanity - behind him. He knows that only cold, isolation, and work lie ahead. But the intriguing little scientist he’s assigned to protect suddenly has him longing for a different kind of future.

When Sadie and Zeb are trapped in a mysterious underground chamber, any kind of future seems impossible. With some unexpected help from Sadie’s prototype, can the two find a way to escape? And if they do, can they find happiness together?