Captain America
“Captain America: Civil War” will feature the return of Bucky Barnes (Sebastian Stan), but a new clip hints that it won’t be a pleasant reunion between him and his friend Steve Rogers (Chris Evans). Marvel Entertainment

Just because the amount of days before the release of “Captain America: Civil War” can be counted on one hand, doesn’t mean the movie is done teasing big reveals about itself. A new extended teaser clip has given fans some insight into what motivates the main hero to exhibit one of his greatest feats of strength yet.

In the first trailer for “Civil War,” Steve Rogers (Chris Evans) was shown on a helicopter pad stopping a chopper from leaving. Fans know that Captain America’s body has been heightened to superhuman levels, but managing to hold back a moving helicopter from lifting off is perhaps his greatest strongman move yet. It even makes the big motorcycle toss in “Avengers: Age of Ultron” look like child’s play. So, what could be motivating the hero to bust out the big biceps?

None other than his best friend Bucky Barnes (Sebastian Stan). In the new clip, featured below, fans get to see Bucky jump in the helicopter, clearly driven by some unknown sense of purpose. Based on his clothing and general attitude, it’s safe to assume that this comes just after his bout with the members of Team Iron Man (Robert Downey Jr.) that was featured in a previously reported teaser clip. That’s when Rogers emerges just in time to latch on to the vehicle and hold it down on the ground. Bucky is unamused by his friend’s antics, possibly hinting that this moment takes place before his memory is fully restored.

Bucky’s alter ego, the Winter Soldier, will be a major plot point in “Civil War” as Cap has been looking for him since discovering he didn’t perish in World War II during his previous stand-alone film. Plucked from the ice by Hydra, Bucky was kept frozen like his friend for decades, only emerging when a high-profile assassination needed to happen. He began the process of getting his memory back after going rogue in “Captain America: The Winter Soldier,” but it’s unclear how far gone he’ll be when he reunites with the hero and his friends in “Civil War.”

Not only will Bucky have to fall in line behind his friend, but he’ll have to learn to like Captain America’s new allies as well. With members of the Marvel Cinematic Universe (MCU) joining both sides of the superhero conflict, the Winter Soldier will have to find a way to get along with the likes of Falcon (Anthony Mackie), whom he tried really hard to kill the last time fans saw them together.

“They’re warming up, you know, it’s a start,” Stan told Nerdist in an interview alongside his co-star. “They’re getting there.”

Check out the teaser clip below ahead of the film’s premiere on May 6. Comment after or tweet your thoughts to @TylerMcCarthy.