'X-Men: Days Of Future Past': Watch The Final Trailer Now — mtv.com

In one month, two different eras of mutant history collide in one epic movie: "X-Men: Days of Future Past," directed by Bryan Singer and starring the casts of the original "X-Men" trilogy as well as 2011's "X-Men: First Class." The final trailer for "Days of Future Past" is here, revealing more about Wolverine's mission to go back in time to the 1970s, and join forces with Charles Xavier and Erik "Magneto" Lensherr. The only problem: Xavier and Magneto are at complete and total odds, a far-cry from their future alliance. On top of that, the newly-paralyzed Xavier has seen better days, based on his shaggy-haired appearance.

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