"X-Men: First Class" chronicles the origins of the X-Men and their ideological divide. Set in the 1960s, the film follows Charles Xavier and Erik Lehnsherr, before they became known as Professor X and Magneto, respectively. Together, they assemble a team of mutants to prevent the Cuban Missile Crisis and combat the villainous Sebastian Shaw and his Hellfire Club. As their friendship fractures due to differing beliefs on human-mutant relations, the stage is set for the future conflict between their respective factions. With dynamic action and compelling character development, "X-Men: First Class" lays the foundation for the legendary X-Men saga.