A kite, a toy airplane, and a delivery receipt from China lead E.B. and Kyla to solve a mystery that's all about flight! E.B. visits the Bell Homestead Museum, and finds out that Alexander Graham Bell was one of many inventors who dreamed of creating a flight machine. Kyla gets to fly a small plane from a museum, and E.B watches packages being sorted at a FedEx hub where they are flown to many destinations. They conclude that the invention of the airplane has transformed the planet into a small world. In season two of The Mystery Files, Kyla and E.B. are ready to solve many more of history's mysteries!