When the statue of the Toltec rain-god is stolen from a Global Warming conference in Mexico City, the BION team gives chase in the ARV, only to be side-swiped by the sudden appearance of a tornado! Legend has it, the rain-god causes weird weather when it's moved. Battling a hurricane, the BION team tracks the statue to the ancient Mayan ruins at Chichen Itza. But when they try to airlift it from the great Sun Pyramid, they are double crossed by tabloid newsman, Steve Sanchez, who stole the statue to create a sensational news story, unaware of the consequences. The BION team have to fight off both Sanchez in his helicopter, and the storm of the century! The moment the statue is returned to Mexico City, the hurricane stops! Was the strange weather the fault of El Nino, or the rain-god? Believe it or Not!