Loki, who faked his death, makes a deal with the leader of a race called Chitauri. Loki is offered an army in exchange for the Tesseract (Space Stone) that’s on Earth. It’s important to know that Thanos is the one who’s firing the shots then. Via the Chitauri, Thanos has given Loki a potent Sceptre to prop him in the charge of getting the Tesseract. This Sceptre contains the Mind Gravestone, but no one knows about this but Thanos. Loki is suitable to control minds using the Sceptre.
The film begins with Loki taking over Dr. Selvig and Hawk-Eye’s minds and stealing the Tesseract from Nick Fury. Natasha goes to India looking for Bruce Banner because the Tesseract is giving out gamma radiations which she’s hoping Bruce can trace. In the long story suddenly, Loki uses the Tesseract to open a portal and the Chitauri attack. Iron Man, Captain America, Thor, Gawk, Hawk-Eye, and Natasha platoon together as the Avengers and fight off the aliens. Leaders of Earth decide the stylish way to end the irruption is to blow up New York and launch a nuke. Iron Man deflects this bullet through the wormhole and blows up the Chitauri mothership. Dr. Selvig and Natasha use the Sceptre to close the gate (one Perpetuity Stones. another, but no one knows about these monuments yet). Iron Man falls back through the ending gate just in time, and Gawk grabs him interiorly. Thor takes Loki and the Tesseract back to Asgard. The Scepter is sequestered by S.H.I.E.L.D.
AvengersPost-Credits Scene
We’re shown the leader of the Chitauri telling Thanos that they failed to conquer Earth. Thanos smiles meaning to say “ challenge accepted”.