RWBY: The Dark Rose

AU where the events of Volume 3 never occurred and the lives of Beacon continued undisturbed. After being sent of a solo mission, Ruby disappears. Having been corrupted by Salem, Ruby is turned into a weapon against Ozpin. Will team RWBY be able to help their leader recover? How will Weiss cope with the drastic changes to the innocent girl she fell in love with? Rated M to be safe.