It's over.
The Nightmare is finally over.

There are some things you cannot take back.
The wounds of Eternal Night cut deep in Equestria, in no one more than Celestia herself. Reeling from the painful aftershocks of betrayal and war and grief, Celestia is unraveling. But falling apart now is not an option. Equestria has lost one Princess, it cannot lose the other. There is work to be done, and The Princess of the Day must take on her sister's mantel if they are to survive.

Raise the Moon, Celestia, before the Darkness consumes you...