The Avengers

You're Tony Stark's daughter, but five years ago, terrorists attacked your school. Everyone thought everyone was dead, but in fact, you survived and were taken far away to Germany. To everyone except the family who took you in, you were dead, and your grave stood next to Avengers Tower. Tony was able to let go of the topic, but he still held onto your memory. But today, you were able to return to New York because you're already fifteen and you have a passport. So, you made it to Avengers Tower without any problems. Using a fingerprint scan, you were almost able to open the gates, but unfortunately, your fingerprint was already blocked as deceased.