Sunset Shimmer's actions for the school and for leaving her past behind are forgotten when an anonymous user begins to publish other people's secrets that make her solely responsible for such misdeed. Accused, alone, and abandoned by who are supposed to be her friends, Sunset feels there is nothing left for her in this world she adopted as her second home.

Then a supernatural force emerges. A darkness never before seen from the afterlife that will seek to avenge the shattered soul of the unicorn by unleashing a horror on the school, on those who dared to hurt her and upon the true culprits behind this infamy.

A legend begins. This is its story.