After the events of Harry's sixth year and Dumbledore's death, he is determined to finish Voldemort once and for all. When Harry decides to return for his final year at Hogwarts he receives unexpected help from the new, mysterious seventh year from America. Why is she so different from everyone else? Why are Harry and a certain Professor so intrigued by this new girl? And how is everyone affected when she's suddenly gone? Sometimes the people you know the least about leave the biggest impact upon your heart. Sometimes those people can show you what the ultimate power really is.