The final act of Avengers Endgame converges decades of storytelling into a single, high‑stakes battle against Thanos. After the heroes travel back in time to collect the Infinity Stones, they combine them in a massive gauntlet, creating a new timeline where the snapped‑away lives are restored—but at a cost. The climax hinges on a sacrifice, a showdown, and the resetting of reality, leaving the universe forever changed.
Beyond the fireworks, the ending sets up the next chapter of the MCU. It resolves Tony Stark’s arc with a poignant goodbye, passes the torch to new leaders like Sam Wilson, and introduces new mysteries, such as the multiverse hints revealed in the post‑credits scene. These outcomes answer the biggest questions fans have been asking since the first snap.