La Vipera e la Roccia (The Viper and the Rock) is the title of the show staged with more than 200 extras at the 58th edition of the Corteo Storico Matildico (Matildic Historical Pageant), a historical re-enactment held annually in Quattro Castella di Reggio Emilia.

The trailer introduces the show's protagonist (actor Federico Bucci), the captain of Matilda of Canossa's army who actually existed, Ugo del Manso, who in 1092 betrayed his Lady to side with Emperor Henry V of Franconia.