Dark Kingdom: The Dragon King

This multipart made-for-TV movie chronicles the adventures of an orphaned blacksmith named Erik who, unknown to him, is actually the heir to a conquered kingdom. In the course of his adventures, he battles with and then wins the heart of Norse warrior Queen Brunhild and slays the dragon Fafnir. After slaying the dragon, Erik (whose birth name is Siegfried) learns that the dragon's blood makes him invincible, and that his reward is a huge treasure. Of course there's a catch -- the treasure is cursed, and threatens his relationship with Brunhild.