After the misadventure at Hampton Court Palace, the London Bus tells Beatrice he will never drive into a building again. But when the Queen sends them both an invitation for tea at Buckingham Palace, the London Bus changes his mind. There's a problem, though - the Bus is too big and needs to be resized. He needs the help of the sloppy Magician with the 1000 Hats before the royal invitation turns into a nightmare. Then they receive another important...