Watch more X-Men Days of Future at br Click the green 'Follow' button to receive cool videos on Dailymotion. br The ultimate X-Men ensemble fights a war for the survival of the species across two time periods in X-MEN: DAYS OF FUTURE PAST. The beloved characters from the original "X-Men" film trilogy join forces with their younger selves from the past, "X-Men: First Class," in order to change a major historical event and fight in an epic battle that could save our future.