Grant and Christina have a new friend named Sam. Her mom and dad own a school supply store. One day Sam reads a book about the famous Amazon River and rainforest and soon everyone is off with Mimi and Papa on the Mystery Girl airplane to a great! Well, that is, if you like sizable snakes, a terrifying tarantula, toe-nibbling fish, messy monkeys, witch doctors, poison arrows, swinging from vines, getting lost, getting scared.. whew! An amazing Amazon boy helps solve the mystery as he guides the kids through the maze of ancient ruins at the famous city of Machu Picchu (“which sounds like a sneeze when you say it real fast!” says Grant). Don’t miss this mystery – it’s wiiillldddd!