A thriller set in London, 1988, during a time when “royal fever” is sweeping the nation — particularly around the “people’s princess.” The elite Royalty Protection Command of Scotland Yard is under scrutiny, and a weak link could spell disaster for the Crown.

Detective Chief Inspector William Warwick and his squad are tasked with investigating the team responsible for protecting the royal family. Among them is Ross Hogan, an unconventional ex-undercover operative with a highly sensitive assignment. But as Warwick and his team dig deeper, they discover that the danger goes beyond simple protection — a renegade organization is threatening national security, and the Crown may be the next target.