Now the Wicked Witch of the West has vanished from Oz, Tom and Jerry are back in Kansas - with Dorothy too. A new villain has arrived however this time from beneath the magical land: the Gnome King. Having captured the Good Witch, the Gnome King and his army are causing chaos through Oz but only need one item to take control of The Emerald City; Dorothy's ruby slippers! It's up to the best cat and mouse around to go back to Oz and restore order to the beloved land.