The Girl From Tomorrow ~ Remus Lupin ~ Marauders Time Travel

During the battle of Hogwarts Natalia Rose Fisher, stands up and faces Voldemort. She is seeking revenge for killing one of her best friends Harry Potter, she gets killed and finds out she's not who she thinks she is and lands back in time surrounded by the Marauders. Stuck back in time with all the knowledge of the future she decides to change everything. How is she supposed to survive without the people she grew up with but others she knows better than they know themselves? But can she save everyone or were some people born to die young?