The Strategic Homeland Intervention, Enforcement and Logistics Division has to deal with a rogue agent, intent on using warheads to destroying as many major cities as possible. Two highly trained agents, Maria Hill and Phil Coulson, must team up with two criminal elements in the form of the Black Widow and Hawkeye, all under the command of Nick Fury.
During the investigation they discover some dark secrets of the founding members of S.H.I.E.L.D, as well as an internal plot to allow the warheads to reach their targets.
Before the days of super powered beings and gods from another world, earth still needed protection. We still needed heroes.