Sometimes we’re given a fancy remix of past trailer shots and sometimes we’re ROCKING OUT TO ALL NEW FOOTAGE. Enjoy the plethora of new dialogue, action and plot details in this final trailer for Bryan Singer’s X-Men: Days of Future Past. But first a little synopsis, if you’re just arriving at the party.

Bonded by war. United by hope. See the X-Men face their greatest challenge together in X-Men: Days of Future Past.

The ultimate X-Men ensemble fights a war for the survival of the species across two time periods in X-MEN: DAYS OF FUTURE PAST. The beloved characters from the original “X-Men” film trilogy join forces with their younger selves from “X-Men: First Class,” in an epic battle that must change the past — to save our future.

Trailer: X-Men: Days of Future Past

X-Men: Days of Future Past directed by Bryan Singer and starring Evan Peters, Adan Canto, Halle Berry, Omar Sy, Peter Dinklage, Patrick Stewart, Ellen Page, Ian McKellen, Shawn Ashmore, Nicholas Hoult, Hugh Jackman, Michael Fassbender, James McAvoy, Fan Bingbing and Jennifer Lawrence is slated to hit theaters on May 23, 2014.