Based on Lewis Carroll's classic Alice's Adventures in Wonderland, Tim Burton's modern extension takes place a decade after the original story. Alice, now 19, finds herself about to be married off to the son of the new owner of her deceased father's trading company. Alice flees from her engagement party and ends up following the White Rabbit down a rabbit hole and back into Underland, a place she only remembers as a vague childhood dream. A lot has changed in the surreal kingdom since she last visited: the Red Queen has usurped the throne from her sister by stealing the crown and is using the fearsome Jabberwocky to terrorize the citizens into submission. A prophecy calls upon Alice to slay the mighty beast, but what does a girl from Victorian England know about killing monsters?
Alice is found by the Cheshire Cat who leads her to Tarrant Hightop, the Hatter, a supporter of the White Queen. Unfortunately Hightop is captured by the Red Queen's lead soldier, the Knave of Hearts, on the way to her sister's castle, but a shrunken Alice escapes unnoticed and discovers that the Vorpal Sword, the only weapon capable of slaying the Jabberwocky, lay in the lair of the Bandersnatch. After helping the Bandersnatch replace its lost eye it returns the favor by assisting Alice's escape from the Red Queen's castle, setting the stage for the coming clash between forces of the Red and White Queens and Alice's battle against the Jabberwocky.
In the final battle sequence, Alice defeats the Jabberwocky precisely as foretold, and is given the power to return home. Upon doing so, she promptly rejects her proposed marriage and instead chooses to engage her father's former business partner with fresh new ideas about how to further their trading operation..