When the top-secret vault inside Avengers Tower is broken into, the Avengers discover the thief and trespasser is none other than Thor’s mischievous brother, Loki. As the team questions Loki’s motives, Iron Man decides to make Loki an “Avenger in Training” in order to keep an eye on him. Unfortunately, our heroes are about to be surprised by another visitor as Nick Furry is attacked on the Helicarrier!