Emerald Key

The Emerald Key is a powerful mystical key that appears in the Sofia the First episode "The Emerald Key". It leads whoever possesses it to the kingdom of Hakalo.

Background
The key was almost stolen by the evil sorceress, Mamanu until Princess Lei-Lani tried to stop her. the key fell into the sea and was washed up on the shores of Enchancia where Sofia found it. The Royal family return home with the key and are visited by Princess Lani who claims herself the owner of the Emerald Key. however, Mamanu disguised as a Princess claims to be the owner of the key. To determine who the real princess is, the royal family put the two of them on some tests.

Mamanu cheats on the last test and gains possession of the Emerald Key but not for long when the royal family catch up with her and get the key back.

The Emerald Key gets returned to its rightful owners and leads the Royal Family of Hakalu back to their kingdom.