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?