Mac's world ended when Lara Douglas was killed in action. Eight months later, on an opp deep in enemy territory, he becomes the target of an assassin. The cyborg fails at her mission and doesn't have any memory of who she was or how she became a cyborg. Determined to help the woman, Mac takes the cyborg with him in hopes of unlocking her memories.
If he's wrong about her, it could cost the rebellion.
But if he's right... then he might be able to save her.