When electronics-store employee Chuck (Zachary Levi) opens a message from a spy whose dying act was to send him a trove of top-secret intelligence, every seemingly unrelated scrap of data about global espionage is subliminally implanted into his brain. But when the CIA and the NSA track the email to Chuck's inbox, they can't decide whether to take advantage of his newfound knowledge or try to scrub his mind clean. As Chuck slowly starts to connect the dots, his ability to spot dangerous plots as they unfold makes him an invaluable asset, and the government recruits him to join their war on terror.