Leonardo Watch, an ordinary aspiring reporter, moves to Hellsalem's Lot, a city created by the intersection of worlds where New York City once stood, and through a series of lucky coincidences, is recruited into the secret society named "Libra."

When the president is attacked by a man under the influence of a powerful synthetic drug called Angel Scale, Klaus and K.K. travel to the alterworld to challenge a Beyondian big wheel to a game of Prosfair in order to uncover the source of the drug.

The members of Libra gather to defend Leo as he rushes to reach the King of Despair in order to confront him, not only for Black and White's sake, but to save the city as well.