Disney has released the full synopsis for Maleficent, the Sleeping Beauty spin-off starring Angelina Jolie.
The upcoming film, inspired by the 1959 Disney classic, will tell the "untold story" of the fairytale villain, portrayed by Angelina, and look at what turned her "pure heart" into a heart of stone, reported Digital Spy.
Her transformation occurs after an invading army threatens the harmony of the land, and Maleficent "rises to be the land's fiercest protector, but she ultimately suffers a ruthless betrayal".
"Bent on revenge, Maleficent faces an epic battle with the invading king's successor and, as a result, places a curse upon his newborn daughter Aurora. As the child grows, Maleficent realises that Aurora holds the key to peace in the kingdom - and perhaps to Maleficent's true happiness as well," the synopsis continued.
Disney live-action production director Sean Bailey has said: "We'll see the events that drove her to be evil. The film will intersect with scenes from the classic animated film. We initially meet Maleficent as a teenage fairy and how she's betrayed."
Elle Fanning is set to play Princess Aurora, while Miranda Richardson, Imelda Staunton, Peter Capaldi and Sharlto Copley also have roles in the film.
Maleficent, which is scheduled for release in July 2014, will be the directorial debut of Oscar-winning visual-effects specialist Robert Stromberg.