For months now 20th Century Fox has been marketing the next X-Men movie in slow teases.

The JFK conspiracy viral ad was clever, but may have gone over the heads of mainstream moviegoers. This, followed by other short teases, has left X-Men: Days of Future Past in an odd place for a summer movie. The flick will appear just a few weeks from the release of Marvel’s other big summer blockbuster, Captain America: The Winter Soldier. This combined with the early marketing push for Guardians of the Galaxy and the fact that Bryan Singer is already tweeting details from the next X-Men movie makes it unclear whether the studio has much confidence in Days of Future Past.

Despite the odd marketing, though, the movie is almost certain to be a success at the box office. Fox today release the second full-length trailer for the move, previewing exactly the type of big summer movie that comic movie fans are expecting.

As seen in the trailer, characters from Bryan Singer’s X-Men movies are set to meet their younger selves introduced in 2011’s X-Men: First Class. The story that unfolds is a cult-classic story arc in the Marvel comic universe involving a dystopian future, mind/time travel, and, of course, a fight to stop the Brotherhood of Mutants’ evil plans.

Patrick Stewart and Ian McKellen will both reprise their roles as Professor Charles Xavier and Magneto. Halle Berry will also be returning from previous movies as Storm, and Ellen Page will once again play Kitty Pryde. Other actors from the previous X-Men movies will also step back into their roles, though it was recently revealed that Anna Paquin’s Rogue will not appear in the movie – her part was cut due to time constraints.

X-Men: Days of Future Past will hit theaters on May 23, one week after Godzilla.