Episode 1: In the wake of The Pulse, The Vault, a top-secret S.H.I.E.L.D. facility in the Rocky Mountains, has busted open, releasing all of the super-powered criminals and monsters imprisoned there. Aboard the S.H.I.E.L.D. Helicarrier, Nick Fury recruits a reluctant HULK to round up all the monsters he can while S.H.I.E.L.D. can assemble the rest of THE AVENGERS to figure out who opened the doors to The Vault -- and why.