Fasten your seat belts and get ready for the ride of a lifetime! In the Mantlepiece Kingdom, King Smidgen sets up an exciting toy car race to settle who's the fastest. There's Edison - the electric whizz, Rusty - the vintage champ, Cuthbert – clown-filled amusement vehicle, Dwayne The Monster - big and bold, and Boxy – well… he's a bit square! Will speed rule on race day or will friendship save the day?