The cabal trail leads John to a lawless Mexican town, where he is drawn into a deadly feud between the local drug lord, nicknamed El Diablo, and the town's police chief, Luna. At the same time, Natalie probes into a romantic connection between her late husband, Steven, and the fiancé of her political adversary, Speaker of the House Miles Latham.

John poses as a Secret Service agent and accompanies Natalie on a covert peace-talk mission. Before long, their helicopter is shot down and they're left stranded in the middle of nowhere, with very dangerous people on the hunt for them.