Fans think they've found a huge spoiler in the latest 'Captain America: Civil War' trailer

The latest trailer for "Captain America: Civil War" stunned and delighted fans by teasing big moments for the Avengers and debuting Spider-Man. But an especially detail-oriented fan noticed that a single frame of the trailer may have revealed a huge moment (and possible death) for a major character. 

Spoiler alert! We're diving into major plot details for "Captain America: Civil War," so read at your own risk! 

Nearly every moment of the trailer was action-packed and full of details. But one Imgur user re-posted an image discussed on IMDB's message boards. It reveals that at the 2:04 moment, you can just make out what will likely be a hugely impactful moment in the film.  The trailer showed several clips of Iron Man battling against Captain America, but this one in particular revealed more. In the background you see someone lying on the ground behind Captain America.

It's Bucky, the Winter Soldier.

The imgur user zoomed in on this frame, revealing Bucky's distinctive logo on his left arm. He isn't just lying on the ground, he's missing most of his metal arm: 

Would Iron Man kill the Winter Soldier?

We don't know yet. But given that the trailer also teased a serious injury for War Machine, Tony's close friend and ally, it's clear that the battle between Iron Man and Captain America is extremely personal. 

Speaking to Empire, co-director Joe Russo teased far-reaching consequences for "Civil War." Russo said, "the consequences of 'Civil War' will have an even more significant impact [than 'Captain America: The Winter Soldier']. In 'Civil War,' we’re going to change the Marvel Cinematic Universe’s psychology, and it’s an extreme shift."

We'll see the Winter Soldier's fate when "Captain America: Civil War" is out May 6.  

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