20th Century Fox have revealed the official plot synopsis for X-Men: First Class.

Directed by Matthew Vaughn (Kick-Ass), X-Men: First Class is based on a script by Jane Goldman and stars James McAvoy, Michael Fassbender, Nicholas Hoult, January Jones, Kevin Bacon, Jennifer Lawrence, Rose Byrne and Oliver Platt.

X-Men: First Class, a prequel to the first three X-Men films, focuses on the early years of the Marvel superhero team and will hit cinemas worldwide on June 3, 2011.

The official plot synopsis is embedded below:

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 Lensherr 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 stop 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.

Screenrant reported this story.