'X-Men: Days of Future Past' Trailer: 'We Need You to Hope Again' (Video)

Professor Xavier and the rest of the team join forces with their younger selves in the latest look at the "First Class" sequel, set to hit theaters on May 23, 2014.

The first trailer for Fox's X-Men origins sequel Days of Future Past has debuted online.

In the sequel to 2011's First Class, members of the team join forces with their younger selves to fight a war for the survival of the species across two time periods.

VIDEO: New 'X-Men: Days of Future Past' Teaser Hits Internet

The trailer shows Patrick Stewart's Professor Xavier instructing Hugh Jackman's Wolverine, who's about to travel back in time, to find and convince the younger versions of Xavier and Magneto to work with him.

"Find me, lead me, guide me," Xavier tells Wolverine. "Be patient."

"Patience isn't my strongest suit," Wolverine quips.

Bryan Singer Tweets Answers, Teases About 'X-Men: Days of Future Past'

Viewers also get glimpses of new cast member Evan Peters (Quicksilver), as well as looks at Michael Fassbender's young Magneto and Jennifer Lawrence's young Mystique, shown crying and being physically pulled to Magneto. The trailer also teases the return of Halle Berry's Storm, Anna Paquin's Rogue and Ellen Page's Shadowcat. There's even a scene of Stewart coming face to face with the younger Xavier, played by James McAvoy.

Director Bryan Singer tweeted on Monday that this trailer would be more character-based, as most of the visual-effects work has yet to be completed.

X-Men: Days of Future Past is set to hit theaters on May 23, 2014.