The Millers are a family of moles who live deep underground, hidden away where no one ever goes. From the comfort of their cozy burrow, they watch in awe as amazing machines drive across the land on their little TV. One day, their curiosity gets the best of them - they decide to venture above ground and see these incredible driving machines for themselves! So come along and meet the Motor Moles, the adventurous little creatures who live right beneath our feet!