Bennie and Claire, a down-on-their luck couple find a discarded Chitauri gun referred to as 'Item 47' and decide to rob a few banks. S.H.I.E.L.D. agent Sitwell is assigned by another agent Blake to retrieve the weapon and "neutralise" (kill) the couple. Sitwell tracks the couple down and the resulting confrontation results in the motel room where the couple are staying being wrecked, and all the stolen money blown to pieces. Instead of killing the couple, due to Benie moddded the 'dead' Chitauri gun to work, Sitwell invites the couple to join S.H.I.E.L.D.; with Bennie assigned to R&D 'think-tank' to reverse engineer the Chitauri tech, and Claire becomes Blake's assistant.
The first part of the credits sequence hints at Bennie's work at S.H.I.E.L.D., refining the Chitauri technology first into a more human-friendly design, then into heavier vechile-mounted weapons, and finally into an artillery piece.