X-Men: Days of Future Past (2014)

Mutants have to travel back in time to keep from extinction because in the future, they are confined in camps. They are also on the brink of extinction as they were hunted and killed by the Sentinels. In order to save the lineage of the mutants, two arch enemies Magneto and Charles Xavier join forces. Their plans are based on stopping the brutality created by the Sentinels.