Harry Potter goes to Godric's Hollow to visit his parents. In the surrounding forest McGonagall leads them, taking them to a very secluded area where McGonagall introduces them to a girl... a girl that's earned the name 'Assassin of the Forest' Her past is a mystery but her skills are great, both muggle and magic. McGonagall convinces Harry to let her come along with him and his friends, to help them in their dangerous journey to find the last four horcruxes. But nobody is perfect and soon the assassin's past comes back to haunt her.