Prequel novel to the Toaru Majutsu no Index: Miracle of Endymion movie that was given away to the first 103,000 attendees of the movie.

Touma and Index attempt to stop a magic cabal from causing destruction in the city prior to the events of the movie. The light novel's story is the same as the Magic Side Surface Story in Toaru Majutsu to Kagaku no Ensemble.