Join the LeapFrog friends as they discover that fun, learning-filled adventure comes in all shapes and sizes. There's a new machine at the Letter Factory…but no one knows what it's supposed to do! With only a map and a few clues, Leap, Lily, and Tad set out to unlock the machine's secret, embarking on an amazing journey that will teach them about shapes, fractions, and measurements—and give them the tools they need to solve THE GREAT SHAPE MYSTERY!