When cyber security expert Jack Neild goes missing in London it appears to be a straightforward missing person's case. As the situation unfolds, Justin Kell's sighting of an adversary from his past makes it clear that kidnap and organised crime are involved. With the authorities struggling to make progress in finding Neild and suspicion of a critical event with a global implication increasing, Kell puts his relationship with his longstanding girlfriend on the line as he becomes central to the investigation. When information from an unexpected source changes the dynamic of the operation, and with the body count increasing, the security services make their move, but will it be too late?