Storm and Luther's Forbidden Letter

While Spanish Habsburg era Antwerp printer Klaas Voeten's devout wife begs him to spend a small fortune on an indulgence, bright son Storm (12) accompanies him to the underground protestant services and helps him print a letter written by reformer Martin Luther, forbidden as any collaboration with the worst heretic on pain of death. Imperial inquisitor Frans van der Hulst follows a monk's trail, Klaas is arrested, but Stormescvapes with the manuscript but can't return home. The knave must go underground with sewer rat Marieke, who only helps him of he reads the illiterate orphan's mother's diary. Desperate to prevent father's execution, Storm turns to the printer's deputy Alwin, who promises to free him for the manuscript.