They’re your parents. They’re your friends. They’re your employers. They’re everywhere. The real Illuminati. After explosions occur in major locations across the world, a cult organization named the Scarlet Horse reveals itself as the villain, and pledges allegiance to their king who will rule the world. When no arrests are made governments realize their police force is corrupted and filled with Scarlet Horse members, so turn to their youth for help. Gifted teenagers from England, India, Canada, Japan, Italy, China, and the United States team up to communicate and solve the case through an app called Relay. Led by Lyn Hartridge from Brooklyn, New York, whose police commissioner father died in the terrorist acts; she joins Relay to avenge him. Joe Brigs, a rich English boy from Bromley with a love for fast cars, becomes her vice-captain. Their find the one who sits on the Scarlet Horse, the king.