See this movie as a sequel to the X-men first class. Main attraction was the villain, from the release of the trailer it self everyone was looking forward how X-men is going to beat this powerful villain. The villain Apocalypse is one of the most powerful villain of the X-men comics. Story is happening many years later the Xmen first class.
Charles has made a school for mutant and now theres many students. A sudden accident give rise to the buried Apocalypse from the dead. Meanwhile magneto was living happily and unnoticed but sudden involvement of his power reveals him. No I dont want to spoil the story any more watch it in the theatre itself. Movie is surely one of the good movies in X-men franchise.
For fans out there its a dont miss one. I surely loved it. Dont think the story has connections with First 3 X-men movies and Wolverine origins its somewhat changed from those things. Watch it as a sequel to the X-men First class. Movie is action packed and well directed.