May is now upon us, and with it comes one of the most anticipated movies of the year, "X-Men: Days of Future Past."

Unless you've been living under a rock or a place with no Internet connection, then you've no doubt been exposed to the near endless amounts of promotion for 20th Century Fox's latest superhero blockbuster. You probably already know by now that the movie centers on time travel, and looks to combine the casts of the 2011 prequel, "X-Men: First Class," and the original X-Men trilogy.

It's also going to have an unprecedented number of comic book characters, from series regulars like Wolverine and Storm, to lesser-knowns like Sunspot and Bishop. It will also feature both past and future version of characters, most notably young and old incarnations of Professor X and Magneto. And then there's Quicksilver, a character who is also being adapted for next year's "Avengers" sequel. 

Given all this cross continuity, many fans are interested to see how filmmakers will fill some plot holes that have come about throughout the lengthy film series, which includes Bryan Singer's two original films, a third film from Brett Ratner, Matthew Vaughun's prequel "First Class," and two solo Wolverine movies.

One major plot hole has been the issue of Professor X and his paralysis.

At the end of "First Class," the young Charles Xavier is left with a bullet in his spine and no feeling in his legs. Yet, this contradicts scenes in "X-Men Origins: Wolverine" that clearly show a much older Professor X walking around with no problem. A new clip from the movie explains that the Professor was able to get surgery to repair his ability to walk, albeit with the consequence of losing his telepathic abilities (how his powers will be restored is yet to seen).

Another clip also addresses concern sabout Beast's transformation.

"X2" had Hank McCoy cameo as a relatively normal-looking human, before he made his blue and furry appearance in "Last Stand." Yet, "First Class" had a much younger Hank undergoing the change to permanent Beast mode. Except it seems it wasn't so permanent after all, as several previews of "Days of Future Past" show Hank looking normal again. So what's the deal? Judging by the scene with Wolverine below, Hank can change back and forth from his nerdy, human form to the blue beast we're accustomed to. How Bruce Banner of him.

It looks like Fox wants to tie up a lot of loose plot points with this movie. So far, fan reaction has been pretty positive. The movie hits theaters May 23. Are you excited? Let us know in the comment section below.