chunk: The Avengers rally in defense of New York City, the wormhole's location, but quickly realize they will be overwhelmed as wave after wave of Chitauri descend upon Earth. Banner arrives and transforms into the Hulk, and together he, Rogers, Stark, Thor, Barton, and Romanoff battle the Chitauri while evacuating civilians. The Hulk finds Loki and beats him into submission. Romanoff makes her way to the wormhole generator, where Selvig, freed of Loki's control, reveals that Loki's scepter can be used to shut down the generator. Meanwhile, Fury's superiors attempt to end the invasion by launching a nuclear missile at Midtown Manhattan. Stark intercepts the missile and takes it through the wormhole toward the Chitauri fleet. The missile detonates, destroying the Chitauri mothership and disabling their forces on Earth. Stark's suit runs out of power, and he falls back through the wormhole just as Romanoff closes it. Stark goes into freefall, but the Hulk saves him from crashing to the ground.