Ep 8. The Invisible Cake Snatcher/On the Move

When the cake Huckle, Lowly and Sally plan on using in their Science Fair exhibit mysteriously disappears from a locked room, it begins to look like the culprit was invisible and could walk through walls./Sally's scooter vanishes. Knowing that the kickstand sometimes fails, Huckle concludes that it must have rolled down the sloped street.