Serena Ace is a doctor at SHIELD. She manages to keep her secret under wraps as she works at SHIELD. That is, until Loki decided to try to destroy the world. She never wanted anyone to know what she was; no one ever knew what she was besides her deceased parents and brother. But when the world is in trouble, she is forced to tell her secrets because she can't just stand by helplessly while the others fought. Serena wants in on the action, so she is pulled into the Avengers Initiative. Sadly, an invasion isn't all she has to worry about. She also needs to worry about her insane brother that is out for her life. But, during the whole craziness, she manages to fall for none other than Steve Rogers. But will he love her when he finds out what she is?