X-Men: First Class Trailer Debuted!

20th Century Fox has debuted the first official trailer on Facebook for X-Men: First Class.

Synopsis: X-Men: First Class charts the epic beginning of the X-Men saga, and reveals a secret history of famous global events. Before mutants had revealed themselves to the world, and before Charles Xavier and Erik Lehnsherr took the names Professor X and Magneto, they were two young men discovering their powers for the first time. Not archenemies, they were instead at first the closest of friends, working together with other Mutants (some familiar, some new), to prevent nuclear Armageddon. In the process, a grave rift between them opened, which began the eternal war between Magneto's Brotherhood and Professor X's X-Men.

The film stars James McAvoy, Michael Fassbender, Rose Byrne, January Jones, Oliver Platt, and Kevin Bacon.

Matthew Vaughn (Kick-Ass) directs, and the producers are Lauren Shuler Donner, Simon Kinberg and Bryan Singer. Singer, who helmed the acclaimed blockbusters “X-Men” and “X2,” wrote the story forX-Men: First Class.

X-Men: First Class opens on June 3, 2010.