The movie revolves around the conflict between two factions of the Avengers, led by Captain America (Chris Evans) and Iron Man (Robert Downey Jr.), respectively. The central disagreement arises over the Sokovia Accords, which demand that the Avengers operate under governmental oversight.
In the climax of the film, the two factions engage in a massive battle at an abandoned Hydra base in Siberia. The conflict intensifies when it is revealed that Helmut Zemo (Daniel Brühl) orchestrated events to expose a dark secret from the past—specifically, the brainwashing of the Winter Soldier (Sebastian Stan) into assassinating Tony Stark’s parents.
This revelation leads to a personal and emotional confrontation between Captain America, the Winter Soldier (Bucky Barnes), and Iron Man. A brutal fight ensues, and Captain America ultimately chooses to protect Bucky. The conflict results in severe consequences, with the Avengers left fractured.
In the resolution, Captain America and Bucky go into hiding to avoid prosecution for their actions. Tony Stark discovers a letter from Captain America, explaining his decision to protect Bucky and expressing regret for the conflict. The Avengers disband, and several members are placed under house arrest.
The film ends with a mid-credits scene showing T’Challa (Black Panther) providing refuge to Bucky Barnes in Wakanda, setting the stage for future developments. Another post-credits scene hints at the return of Peter Parker (Spider-Man) and introduces the character of Aunt May.
In summary, “Captain America: Civil War” concludes with the Avengers divided, Captain America and Bucky in hiding, and Tony Stark grappling with the emotional fallout of the conflict. The film sets the stage for the evolving dynamics within the Marvel Cinematic Universe.