When Penelope's mother dies in mysterious circumstances, she has to go and stay with her brother, in the Avengers compound. Unbenounced to her, the Avengers have currently got their hands full with a very disturbed new member. And her brother hates him. This means, that Penelope isn't allowed anywhere near him. But once she hears that he knows something about Hydra, a name that had commonly come up in hushed conversations about her life's misfortunes, she can't bring herself to stay away.