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The X-Men cinematic universe is complicated—perhaps more complicated than that of any other superhero franchise. There are the original films, prequels, spin-offs and a movie that basically erased the original series and started a whole new timeline. Now, the newest entry in the series, X-Men: Dark Phoenix will take place in 1992.

Here’s where all the movies fit on the fictional timeline and (spoiler alert!) summaries of the plots for those who have forgotten what’s happened so far.

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Write to Eliana Dockterman at eliana.dockterman@time.com.

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