Jessica Jones has successfully rescued her husband, Luke Cage, from Norman Osborn's helicarrier - but the heroes are still nervous. Suspicious that, while they had him open for surgery, may have somehow sabotaged Cage's body, the Avengers ask Dr. Strange and Dr. Voodoo to use their magics to examine him.

What they find is a small device transmitting a signal so faint Daredevil can barely hear it. It could be relaying their location, or it could be something far worse. And the Avengers have only a limited time to deal with it as Norman Osborn and his Dark Avengers are homing in on it's signal.