Orphans raised by a martial arts master are plunged into a mystery involving demonic powers, drug cartels, ancient rituals and blood sacrifice.

In the Mexican town of Santa Clara, Salma, a 16 year-old orphan who never got to meet her biological parents, has spent most of her life searching for clues of their identities and whereabouts, that is until she discovers a special book that is filled with stories of the town's past and the history of it's people.