Following the opening battle sequence that debuted over the weekend, 20th Century Fox has released the final trailer for X-Men: Days of Future Past. Director Bryan Singer returns to the franchise he helped create with X-Men and X2: X-Men United for this Marvel adaptation that brings together the cast of the original trilogy with the young stars of 2011's X-Men: First Class. The story follows Wolverine (Hugh Jackman) as he is sent back in time to the 1970s to change the past so he can save his fellow mutants from a war that could destroy them all. Check out this new footage then, in case you missed it earlier today, CLICK HERE to watch a Q&A session with stars Hugh Jackman, James McAvoy and Michael Fassbender to learn more about this superhero sequel, arriving in theaters May 23.

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.