The search for a key leads young Clara (Mackenzie Foy) to a magical world in 'The Nutcracker and The Four Realms.'

The Sugar Plum Fairy (Keira Knightley) welcomes Clara to the Four Realms.

On her mission to save the Four Realms, Clara is supported by Shiver (Richard E. Grant), regent of the Land of Frost; the Sugar Plum Fairy, regent of the Land of Sweets; and Hawthorn (Eugenio Derbez), regent of the Land of Flowers.

Mother Ginger (Helen Mirren), ruler of the Fourth Realm, is out to destroy this magical world. She also has the key that Clara needs.

Clara and the Sugar Plum Fairy make their way through the castle.

The Sugar Plum Fairy helps Clara prepare to witness a special performance.

The Ballerina of the Realms (Misty Copeland) tells the story of the Four Realms through dance.

Captian Phillip (Jayden Fowora-Knight), a nutcracker-turned-soldier, is at Clara's side.

Captain Phillip is impressed by Clara's bravery and brilliance.