Edit: If you can’t watch the one above because of regional restrictions, here’s an slightly different alternate version:
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.