Three feature-length action adventure prequels based on the Marvel comic strip. 'X-men: First Class' (2011) is a prequel to the first three 'X-Men' movies. The film charts the beginning of the saga, following Professor X (James McAvoy) and Magneto (Michael Fassbender) through their formative years in the 1960s as they come to terms with their newfound superpowers. Initially close friends who work together to fight against evil, the two men are driven apart by a conflict of opinion that ultimately leads to the eternal war between Magneto's Brotherhood and Professor X's X-Men. 'X-men: Days of Future Past' (2014) acts as a direct sequel to three separate films, 'X-Men: The Last Stand' (2006), 'X-Men: First Class' (2011) and 'The Wolverine' (2013), with a storyline that alternates between past and present. When the survivors of the battle in 'X-Men: The Last Stand', led by Magneto (Ian McKellen), Professor X (Patrick Stewart) and Storm (Halle Berry), discover that total annihilation now awaits humans and mutants alike, they send the ageless Wolverine (Hugh Jackman) back in time to try and change the course of events. In the past, Wolverine must team up with the younger incarnations of the X-Men seen in 'X-Men: First Class', Charles Xavier (McAvoy), Magneto (Fassbender) and Mystique (Jennifer Lawrence), to avert disaster. Will he succeed? Finally, 'X-men: Apocalypse' (2016) is a prequel to the whole franchise. En Sabah Nur (Oscar Isaac), known as Apocalypse, has been worshipped as the first and most powerful mutant to have ever lived. When he is awakened after several thousands of years at rest, Apocalypse sees what the modern world has become and sets about correcting and cleansing humanity to create a better world for mutants to live in, recruiting Magneto (Fassbender) onto his team. Hearing about the imminent attack, Professor X (McAvoy) teams up with Raven (Lawrence) and Beast (Nicholas Hoult) to try to save humanity.