When things get out of hand between Celestia and Luna, things go a-wall. When the Mane Six try to put a stop to this, they are put on different sides. Will the Mane Six be able to put a stop to this? Or will they die like heroes, and lose friendship?
At the end of Rick Riordan's The Heroes of Olympus, Book 3: The Mark of Athena, Percy and Annabeth confronted their fate and dropped down to Tartarus to shut the Doors of Death from the inside, but what if they accidentally crossed the line?