Five years after the death of her partner, former Crossfire agent McKenna Holloway has left behind the life of gunfights and espionage for a quiet, solitary one in the country, far away from anywhere her enemies would expect to find her. She's hidden her identity exceptionally well, changing everything from her appearance to her name, but one man will stop at nothing to find and destroy the only person left who could solidify the case against him for Carmen Santos' murder.

When a threat is received by McKenna's former teammates at Crossfire Security, lead agent Stephen Decker makes it his personal mission to seek out his former nemesis and warn her about the looming danger. But when McKenna turns down Stephen's offer for protection, he refuses to take no for an answer, deciding to prove his worth to the woman he'd butted heads with since day one.