The Fairly OddParents - Season 6 Episode 9 -

When Mark Chang celebrates his one-year anniversary on Earth, they go back to Yugopatamia and Mandie marries him and became queen while Mark's dad turns into Timmy and goes to Earth. Later, Mandie becomes a dictator, so Timmy and Mark must stop her before she destroys the Earth. Also, Timmy's Dad locked Timmy up in a cage made of wood because of what Mark's dad did as Timmy.