The Gnome - S2.E6

There was once a very strange King who collected trees from around the world. His favourite tree was a chocolate tree that he kept in his garden. He loved this tree that he proclaimed a new law: ""If anyone eats a single chocolate from this beautiful chocolate tree, by magic they shall instantly disappear one hundred miles down under the ground."" But this only taunted his three daughters who really loved to eat chocolates, and they spent six months looking out the window hungrily at the choc that grew on the branches. Eventually the youngest princess came to the conclusion that they're father loved them too much to just magic them under the earth, and they all ran out to eat. But no sooner had they plucked one each all three daughters suffered the fate their dad had fortold...

The King later discovered that his daughters were lost, and his tree reduced to a pile of chocolate wrappers. The royal stoned magician explains that the tree will never grow again unless his daughters come back.