Tony Stark is a man of many things. Billionaire, former playboy, philanthropist, and Iron Man. But a father, he is not. Tony was always careful with the women in the past. Making sure that he always used a condom. However, when a young woman shows up, with documents, that stated she was his daughter, he's in shock, and completely ignores the poor girl.
Nick Fury takes note of her abilities, and athletic talent, and decides to recruite her for the Avengers initiative. She trains under Natasha, as her shadow. But, when she needs Tony as a father the most, will he be there? Or will he be absent?