It was a total different story from all other x men stories. Logan was concedered as an immortal being. But in this movie he is old and his healing factor is not working properly. Not only him but other x men members including charls xaviour is now old and weak.
The key cheractor in the story is a girl who has the same abilities of logan. She was haunted by a group of people who created her. They hade developed a vepon using her DNA.
To save her logan must reach a place where some other mutan kids are gathering.
He made his destination but it didnt help. The villens reached there. Every one strugled to escape. At last the mutans where saved, but logan died protecting them.