"X-Men: First Class" is a 2011 superhero film that serves as a prequel to the original X-Men trilogy. Directed by Matthew Vaughn, it explores the origins of the X-Men and the relationship between Charles Xavier and Erik Lensherr, who later becomes Magneto. Set during the 1960s, the film highlights the early days of mutant activism and the formation of the first team of mutants. The plot revolves around the conflict between the X-Men and the Hellfire Club, led by Sebastian Shaw. As tensions rise during the Cold War, the film delves into themes of friendship, betrayal, and the struggle for acceptance in a world that fears mutants.