When a mysterious mare passes through Ponyville, Twilight Sparkle can't help but feel obligated to help her. As the main 6 face new, greater foes, dark secrets from the mare's past surface. Fears will be faced and bonds tested, but what happens when Twilight finds out why this strange pony is important? Will the main 6 be able to stick together and fulfill their duties as the elements of harmony? Or will they all fall apart? Rated T for dark content, blood, violence, possible swearing.