The Nutcracker ballet by Tchaikovsky is a classical ballet in two acts and it is one of the most famous ballets in the world. The ballet is based on a story called The Nutcracker and the Mouse King by the German author E.T.A. Hoffmann in 1816. It tells the story of a little girl who goes to the Land of Sweets on Christmas Eve. Clara, who befriends a nutcracker that comes to life on Christmas Eve and wages a battle against the evil Mouse King.