"Halfday" or "The Secret File of the Hapless Half-Pint" - S1.E16

The principal of the local school gives the kids a surprise halfday. Because this wasn't planned the SpyDogs must work quickly so they can assign dogs to watch over the children. But there's one child in particular that no one wants to watch over: Little Timmy. Ralph decides to take watch over the kid, little does he know what lays in store for him and his friends...