On their way to see Twilight Sparkle's favorite historical figure, Starswirl the Bearded, L and Princess Twilight find themselves in the middle of the legendary war between ponykind's evolutionary ancestors and the ancient draconiquui. Long before Discord came into the picture.

Can L and Twilight maintain their friendship with each other, knowing exactly what one can do to the other? Or will the past members of their species drive them apart? Chaos ensues.