Captain America: Civil War, now poised to be the longest Marvel movie ever made, now has a pretty long new trailer to go with that brag. Though this latest peek into the May mega-hit is stacked with enough Avengers thrills to make one assume it's all about the power of the crew, this is still just as much a sort-of Captain America sequel as anything else.

Also, um, Spider-Man shows up:

As previously reported, Geek.com recently cited a "source close to the film" regarding how exactly Spidey ends up hanging out with the hella fractured Avengers. According to this unnamed source, Spider-Man (POTENTIAL SPOILER ALERT) idolized Tony Stark as a kid and simply couldn't resist the offer to join his hero when presented with the opportunity.

Tom Holland has been tasked with embodying this new incarnation of America's favorite arachnid enthusiast, making his non-ensemble debut in director Jon Watts' Spider-Man in July of next year. "For Spidey himself, we saw many terrific young actors, but Tom’s screen tests were special," Sony Pictures Chairman Tom Rothman said in a statement announcing Holland’s casting last year. "All in all, we are off to a roaring start."

Civil War sees Cap (Chris Evans) in a contentious battle against Stark (Robert Downey Jr.) and the looming presence of potential superhero regulations on the federal level. Given the complexities of the battle, and the overwhelming number of characters involved, the film's recently confirmed running time of 146 minutes sounds like it will buzz right by.

Pick a side. Captain America: Civil War hits theaters on May 6.