Directed by Matthew Robbins and co-produced by Walt Disney and Paramount Pictures, Dragonslayer (1981) is a dark medieval fantasy that redefined how dragons appeared on screen. When a young apprentice (Peter MacNicol) must face a fearsome dragon after his master’s death, he uncovers the limits of courage, faith, and sacrifice. Combining groundbreaking effects with an unusually somber tone, it remains one of the most atmospheric and mature fantasy adventures of the 1980s.

Från IMDB:
A young wizarding apprentice is sent to kill a dragon which has been devouring girls from a nearby kingdom.