Theodore, having been locked in a tower by Manfred, is freed by Manfred's daughter, Matilda. He races to the underground church and finds Isabella. He hides her in a cave and blocks it to protect her from Manfred and ends up fighting one of the mysterious knights. Theodore badly injures the knight, who turns out to be Isabella's father, Frederic. With that, they all go up to the castle to work things out. Frederic falls in love with Matilda and he and Manfred make a deal about marrying each other's daughters. Frederic backs out after being warned by an apparition of a skeleton.