Young or old, rich or poor -- death is the equalizer. It is the final threshold every pony must cross. What lies beyond is mystery. That's where I come in.

Twilight is pitted against one of the most feared creatures known to pony-kind.

Twilight and her friends are murdered by a ruthless assassin. They wander the land as ghosts, seeking their killer and unraveling a darker plot against Equestria.