As one of Earth's greatest leaders, Commander Jax Spartan lives his life by a strict code. Dedicated and alpha to the core, he is the epitome of what every Elite soldier aspires to be. Second-in-command Sullivan Archer rules by his best friend's side, and together they form an unstoppable force that few are foolish enough to challenge. Jax and Archer have always known they'd share their chosen, but their hearts have already been claimed by the woman they've vowed will belong to them.

Alliance scientist Serra Lysander is a genius who has kept the planet safe with her inventions. She's lived a sheltered life, separated from society by her brilliant mind and her overprotective mother. The only time Serra has truly ever felt accepted is with the two men that will cost her everything...

When danger leads Serra straight into the arms of Jax and Archer, they will do anything to keep her safe, even claiming her despite the fact she is off limits. With the future of the Alliance on the line, will their love and dedication be enough to save them, or will they be too late to stop the growing threat from destroying them all?