It was 2012. Nick Fury gathered the Avengers to stop Loki and save the planet, but Loki managed to open the portal and brought the Chitauri to New York.

Each one was fighting for one side. Tony was in the air with his Iron Man suit, Steve was fighting with the help of his shield on the ground, Thor was throwing lightning with his hammer, Clint was on a rooftop shooting arrows, Natasha was fighting hand to hand on the ground, Bruce are Hulk and you threw cobwebs and swingin from side to side