Six years after Disney took us to the magical world of Underland from Lewis Carroll's timeless tales, fans will get to go back this summer with the Alice in Wonderland sequel Alice Through the Looking Glass. Tim Burton directed the original 2010 classic, which earned more than $1 billion worldwide at the box office and helped spawn Disney's recent spate of live-action fairy tale revivals such as Maleficent, Cinderella and the studio's current blockbuster, The Jungle Book. While we get ready for Alice Through the Looking Glass's release on May 27, Disney has released a new preview, with an introduction from producer Tim Burton.

While Tim Burton didn't return to direct this sequel, he did stay on as a producer, revealing in his introduction to this video, from the Disney Studios Twitter page, that this fantasy adventure should be watched in the immersive IMAX format. This trailer reveals plenty of new footage, including where Alice Kingsleigh (Mia Wasikowska) has been since leaving Wonderland. This preview reveals that Alice has been locked up in a mental institution, suffering from an incurable case of "female dementia." Thankfully, it doesn't take long for Alice to make her escape and return to Wonderland, but it may be too late.

Johnny Depp also returns in Alice Through the Looking Glass as The Mad Hatter, but this time around, he is in great danger! Before her time in the mental institution, Alice Kingsleigh has spent the past few years following in her father's footsteps and sailing the high seas. Upon her return to London, she comes across a magical looking glass and returns to the fantastical realm of Underland to visit her friends the White Rabbit, Absolem, the Cheshire Cat and the Mad Hatter (Johnny Depp), who is not himself.

Related: Alice Must Save the Mad Hatter in 3 Through the Looking Glass Clips

The Hatter has lost his Muchness, so Mirana (Hathaway) sends Alice on a quest to borrow the Chronosphere, a metallic globe inside the chamber of the Grand Clock which powers all time. Returning to the past, she comes across friends - and enemies - at different points in their lives, and embarks on a perilous race to save the Hatter before time runs out. Anne Hathaway and Helena Bonham Carter are also back as the White Queen and the Red Queen. They join the voices of Alan Rickman (Blue Caterpillar), Stephen Fry (Cheshire Cat), Michael Sheen (White Rabbit) and Timothy Spall (Bayard). We are also introduced to several new characters in this exciting sequel, including Zanik Hightopp (Rhys Ifans), the Mad Hatter's father and Time himself (Sacha Baron Cohen), a peculiar creature who is part human, part clock.

Director James Bobin brings his own unique vision to the spectacular world Tim Burton created on screen in 2010 with Alice in Wonderland. The film is written by Linda Woolverton based on characters created by Lewis Carroll and produced by Joe Roth, Suzanne Todd, Jennifer Todd and Tim Burton with John G. Scotti serving as executive producer. The movie will go up against 20th Century Fox's highly-anticipated X-Men: Apocalypse when it hits theaters on May 27, which could spawn one of the more unique box office showdowns this summer, pitting two beloved franchises against each other. Take a look at this extended sneak peek to learn more about Alice Through the Looking Glass.