In a future ravaged by war, the superhero team makes a desperate last stand against a force of deadly robots. Their only hope is to send Wolverine back in time to the 1970s, to join forces with an earlier version of the X-Men and change the events that started the conflict. Superhero adventure sequel uniting the casts of the original movie and prequel First Class, starring Hugh Jackman, Jennifer Lawrence, James McAvoy and Michael Fassbender.