WATCH: ‘X-Men: Days of Future Past’ Second Official Trailer

The second trailer in the long-awaited X-Men: Days of Future Past has been released by Fox.

Per the film’s YouTube info:

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.