Journalist Oliver "Olly" Steeds travels to the ends of the earth to investigate the truth behind some of the world's biggest mysteries. From the lost city of Atlantis to the Ark of the Covenant to the Nazca Lines, Olly doesn't just talk to the theorist experts; he puts their controversial claims to the test. Olly employs hidden cameras, holds clandestine meetings with smugglers, treks to remote locations to see relics, and throws himself head-long and hands-on into the native rituals to get the real story and weed out the myths.