-Some time is spent with Cap's crew as they rendezvous with Hawkeye and hunt down leads after Zemo. Bucky has gathered a file on him, which explains his backstory and offers clues on how to find him. Natasha questions Cap's discernment in private, while Sam sticks up for him. Cap and Sharon begin to show signs of romance. That night, Wanda has a vision of what Stark's plans will bring about: "A perfect world, but at the cost of thousands of lives".
- At HQ, Gyrich and Ross are livid to learn that Cap has escaped. Stark, however, is more concerned with the Acadamy. He spends "quality time" with T'Challa, as we learn more about the prince's background. They bond over the loss of their fathers. We also have a nice look at star pupil Peter Parker.
-Following Bucky's leads, Cap's team raids Zemo's base.They fight there way in and catch glimpses of his experiments, which include Emil Blonsky, The Abomination. Zemo easily beats most of the team, and gains the upper hand over Cap. He offers everyone a chance to "become part of the future", before he, Crossbones, and an awakened Blonsky teleport away.
-At HQ, it is revealed that Dr. Sofen smuggled in a homing device, which allows Zemo's crew to teleport right into the middle of Stark's Acadamy. A fight breaks out, before Gyrich steps in, revealing that he and Ross had been working with Zemo to gather Intel and assets they couldn't. None of the heroes are initially okay with this, but Stark is won over by Zemo's charisma. He has built a close relationship with the Wakandan Chiefs and will be overseeing the negotiations with him.
-In private, T'Challa reveals to Stark that his father never trusted Zemo, and he believes that the Baron was involved in the death of his father. Stark assures him that isn't the case, and readies a team to recapture Cap in case he tries to meddle with the negotiations. T'Challa declines to join, and Vision refuses, offering a warning against trusting Gyrich and Zemo over Cap. This leaves Stark with a team of War Machine, Ant-Man, a newly suited Wasp, and a crew of his top students (Including the newly dubbed Spider-man). Rhodey and Scott both question going after Cap, but Stark asserts his leadership. He also allows Zemo to procure Blood and Yellowjacket, but not a mystery asset, and leads his team off into the night.
-Cap's team has recovered files at Zemo's base pertaining to to the Wakandan negotiations, and a contingency to take over the country if the need arises. They quickly make plans to move to the border, where Cap is contacted by a secret benefactor. They arrive at a rendezvous at make it across the border. Their benefactor is revealed to be T'Challa. Suddenly, lights appear in the distance. Stark's Avengers are here, and Natasha summoned them.
-Zemo's team arrives in Wakanda. He has brought along the "off limits" asset, and instructs Crossbones not activate it unless things go wrong.
-At HQ, Vision wakes up from his "sleep" and breaks out, despite Gyrich and Ross' attempts to stop him.
-An epic fight breaks out between Cap's team and Stark's forces. War Machine vs Falcon, Sharon vs. Black Widow, and of course Captain America vs. Iron Man.
-When T'Challa doesn't arrive at negotiations, his step-brother Hunter (or Elliot Ross) fills in. The talks go poorly, however, for the Prince has shared his suspicions with the chief. Hunter reveals footage of Crossbones at the scene of the attack. In reply, he covertly signals his team.
-Cut back to the heroes fighting and Vision racing to the scene.
-A blue blur races through the Wakandan embassy while Zemo calmly begins to explain his ideology to Hunter. Suddenly, the blur breaks into the room, taking out the guards and stops, revealing none other than Pietro Maximoff.
-This revelation is felt by Wanda, who is knocked out of the battle by the mental backlash. This distracts Cap, allowing Tony to get the upper hand. Rhodey tries to get him to stop the fight, to no avail.
-Vision crashes into the embassy. He proceeds to try and take on all the Masters of Evil by himself, only to be overwhelmed by their numbers and technology specially designed by Zemo for Stark in case any Avenger ever went rogue.
-Wanda sees this psychicly, and uses her powers to pull the fighting heroes apart. She, Rhodey, and Spiderman together convince both sides to unite for the common good, and they speed off together towards the embassy.
-A massive battle begins between the united Avengers and the Masters of Evil. Antman shrinks inside Vision to free him, then jumps out to turn big for the first time, swatting Blood out of the air. The resurrected Quicksilver wrecks havoc on the team until he comes face to face with Wanda. She gets inside his head, forcing him to remember who he is, and takes them both out of the fight. Zemo makes a run for the armory, where he gains the upper hand on Tony only for Cap to jump in at the last minute and....
Ending 1
Cap sacrifices himself to save Stark, who blasts Zemo in the face and flies out into the battlefield, where the Avengers are celebrating, carrying the body of his fallen friend. In the aftermath of Cap's death, all opposition to the S.R.A. ends. Stark kicks Gyrich out of his council and arrests the surviving Masters, except for Zemo, who is missing. Peter chooses to leave the Acadamy, but receives the parting gift of a new Spiderman costume. Wanda and Vision help Pietro readjust to life. Gen. Ross recruits Rhodey, Natasha, and Bucky for a new, top-secret black ops team, with a Red Hulk tease. Lastly Stark approaches Sam with Cap's old shield. T'Challa is crowned king, and offers Hawkeye a new safe haven in Wakanda for his family. Clint himself officially retires as an Avenger. He says that Steve always held that Captain America was more than a man, he was a dream. And a dream can never die. The film ends with Sam, now as Captain America, giving an inspirational team to the New Avengers, whom he now leads.
Ending 2
Is nearly the same as the first ending, only with Steve surviving. Still technically a fugitive and unable to rejoin the Avengers, he passes his shield on to Bucky, offers some words of wisdom, and drives off into the sunset with Sharon to discover what this new world holds for him. Also, in this ending, Zemo is captured and imprisoned alongside the surviving Masters.