In the near future, mutants are almost terminated by robotic hunters called the Guardians. The only hope to survive is to prevent the chain of fateful events that resulted in the appearance of the Guardians. Kitty Pryde uses her powers to transfer the Wolverine’s consciousness in his body in 1973. The past is not so rosy: the young Professor X is completely disappointed in his ideas, Magneto is in prison deep beneath the earth and the humanity doesn’t know how to react to mutants…