Spoiler Warning: I don't know anything about this movie, but spoilers for those who don't even want a hint of what might happen.
It's less than two weeks until Avengers: Infinity War finally arrives in theaters and we know maybe a handful of details about the movie. While there's a basic logline, the Russo Brothers implied that wasn't even the "true plot" of the movie, so who knows what going on here. When you have a movie this secretive, with fans this excited, there's going to be way more rumor than fact leading up to the release date. However, even the craziest of rumors can have a grain of truth to them.
There's been no shortage of rumors surrounding Avengers: Infinity War over the years, and while a fair portion of them are beyond crazy, some of them are pretty believable. It's that believability that makes a rumor so enticing! The plot may be a mystery but based on what we do know, these are the rumors we think will actually come true in Avengers: Infinity War.
There Will Be No Big Thanos Battle
Before you take off to the comments section let me explain! Thanos will obviously fight the Avengers. We know for a fact that he fights Iron Man's team in space and Captain America's team in Wakanda. What I'm saying is there won't be a battle between all of Earth's heroes fighting Thanos at once. That's going to be saved for Avengers 4 when Thanos has a completed Infinity Gauntlet. Or at least, so the rumor goes. This makes sense to me. Infinity War is bound to have tons of spectacle, but it still needs to build up to Avengers 4, which is the true conclusion to this iteration of the MCU. Something massive needs to happen in the final movie of Phase 3, so it's possible that Marvel is saving this particular fight for next year.
Hawkeye Will Become Ronin
The absence of Hawkeye (Jeremy Renner) in all of the marketing material for Infinity War has led to more fans paying attention to Hawkeye since, well, ever. Rumor has it that the reason Hawkeye is MIA is that he's on an important solo mission, and thanks to some leaked set pics, people think that Clint Barton will be operating under the ninja persona of Ronin. For what purpose he would do this is unclear, but it seems likely. There must be a reason that Hawkeye doesn't show up in any trailers and it might be because Hawkeye is technically not in the movie; Ronin is.
Captain Marvel Will Cameo
The next big hero Marvel will debut is Captain Marvel, who will be headlining her own movie sandwiched right between the two Avengers films. Carol Danvers no doubt has a huge future in the MCU ahead of her, so it makes sense that people think she will lend a hand in the MCU's biggest conflict. There's been no official confirmation that Captain Marvel is in either Avengers film, but set pics claim to have spotted Brie Larson on one of the sets for the two movies. Captain Marvel has to be introduced into the grander scheme of the MCU at some point and it's logical to tease her appearance in Infinity War, formally introduce her in her solo movie, and then have her join the rest of the MCU in Avengers 4.
Nick Fury Will Show Up
Nick Fury may have spearheaded the formation of the Avengers (thus making him the backbone of the MCU) but the character hasn't been seen at all since the conclusion of Avengers: Age of Ultron. True, Fury will be starring in Captain Marvel, but that movie is a prequel set in the 90s. We have no idea where Fury has been for the last three years. Given his importance to the Avengers franchise, it's totally plausible that he'll be making an appearance in the Avengers' greatest battle. We can't speak to what size the role will be, given the sheer amount of other characters that need to be serviced, but I'd be pretty surprised if Fury didn't show up at all in Infinity War.
The Avengers Will Still Be Divided
Following the events of Captain America: Civil War, the Avengers are split right down the middle. One half, led by Captain America, is operating underground, while Iron Man's team is the public face. We knew that this would still be the case going to Infinity War, but what I'm saying here is that it will still largely be that way by the end of the movie. The whole point of breaking the Avengers up in the first place is so they don't have a unified front when they face Thanos, eventually leading to his victory. Then in Avengers 4, everyone has learned their lesson and put their differences aside for the greater good, creating a more pleasing thematic arc to bring this series to a close. Maybe the Avengers will be in the same battle by the end of Infinity War, but that doesn't mean they are working together.
The Avengers Lose At The End
Avengers: Infinity War is all about high stakes as Thanos collects the necessary stones to power the Infinity Gauntlet. It seems likely then that we'd actually have to see a full powered Thanos at some point. If the villain obtains god-like, unstoppable power then the heroes are probably going to lose. The division of the Avengers will probably cause them to lose and the movie will end with Thanos in charge and our heroes in the worst position ever for Avengers 4. It's kind of a bummer to watch a two and a half hour movie just to see the main characters lose, but it could be a gamble that pays off. It also makes the wait for Avengers 4 all the more insufferable.
Captain America Will Die
The cast and crew of Infinity War have been teasing for a while that not everyone is making it out of this movie alive and while I really don't want it to be true...Captain America is high up on the list of endangered heroes. Someone big has to die in this movie and Cap fits the bill. He'll go out like a champ defending the innocent from Thanos, making the sacrifice play to buy all his friends a chance at victory. Thematically, it's a great way to end Cap's 18-movie long arc. Contractually, Chris Evans is ready to go and he's not sticking around past Avengers 4. We'll be devastated to see him go, but that's kind of the whole point of killing favorite characters.