WATCH: Ian McKellen and Ellen Page in New X-Men: Days of Future Past Trailer

Fox has released the latest trailer for its upcoming summer film X-Men: Days of Future Past. The new teaser includes shots of out actors Ian McKellen as mutant liberation leader Magneto along with Ellen Page as Kitty Pryde. The movie is also directed by out filmmaker Bryan Singer, who previously helmed franchise entries X-Men and X2: X-Men United.

The newest trailer includes previously unseen footage of the terrifying Sentinels, robots created to target and kill mutants. It also features scenes with fan-favorite characters Colossus (Daniel Cudmore), Iceman (Shawn Ashmore), Blink (Fan Bingbing) and Mystique (Jennifer Lawrence).

The film's antagonist is the villainous Bolivar Trask, creator of the Sentinels, portrayed by Game of Thrones' Peter Dinklage.

Days of Future Past is based on one of the most famous storylines from the original X-Men comic books. Written by Chris Claremont and drawn by John Byrne, a group of X-Men from the future go back in time to warn the X-Men of the present that they must prevent a history in which mutants are hunted down and forced into interment camps. The film version follows a similar plot, with enemies Professor X (Patrick Stewart) and Magneto (Ian McKellen) putting aside their long-standing differences to warn their younger selves (James McAvoy and Michael Fassbender, respectively) of an impending war on mutantkind.

Mutants have frequently served as an allegory for the struggle of minorities, including the LGBT community. In a recent interview, Ian McKellen noted that it was Bryan Singer's comparison of mutants to queer people that got him to sign on for the role of Magneto.

The highly anticipated film is scheduled for release in the United States on May 23, 2014. A sequel, currently titled X-Men: Apocalypse, has already been calendared for May 27, 2016.