Doraemon: Nobita and the Legend of the Sun King
Doraemon and his friends create a hole in time and travel to Mayana, a lost Mayan civilization hidden in the jungle. There, Nobita meets his exact double-Prince Thio, the heir to the throne. The two decide to switch places in an attempt to save Mayana from the clutches of the wicked witch Ledina and her dark forces.
