Story of the deformed bellringer Quasimodo who rescues a gypsy girl from the evil intentions of his guardian who wants to kill her.

England's Edward I is said to have used a fearsome machine, called "Warwolf," to batter his enemies' castle walls into rubble. Historians think Warwolf was a wooden trebuchet, a missile-throwing siege weapon that dominated siege warfare until cannons were invented. In the Scottish countryside, teams of archaelogists and engineers build two trebuchets side by side, using medieval building techniques.