Restoring the his father´s house , who died months ago, Facundo Salvatierra makes a discovery that will implicate him in the most enigmatic case of the last decade: Children of September.
The how, who and even more why a nine-year-old boy has been murdered every September for eight years will make an experienced detective like Álvarez Gutiérrez been astonish, Even more because he has been obsessed with the case since its beggining.