An entire month after the events of Equestria girls, Princess Twilight Sparkle has finally relaxed. She believes that she is now ready for anything- that is, until the next part of her Alicorn training kicks in. You see, when somepony becomes an alicorn, life just throws things at them until it believes they're ready. Being sent to an alternate dimension was just the first step- now she must solve a problem from the past, and save the lives of ponies long gone.

But how will she do that when she doesn't know what's going on?

This... thing that Discord gave her; what is it?