Frederik Du Chau were announced as the directors, with Sue Kroyer serving as co-producer. The initial story centered around a young female character named Susannah who embarks on a dangerous quest for the Holy Grail to save her sister from a ruthless and powerful knight. The film was put into production before the story was finalized. However, during the fall of 1995, the animators were reassigned to finish Space Jam (1996). Meanwhile, in April 1996, Christopher Reeve was cast as King Arthur. During the interim, several story changes were made that resulted in creative differences between the Kroyers and the studio management. In particular, the Holy Grail was replaced with Excalibur, in which Warner Bros. Feature Animation president Max Howard felt better reflected the film's setting: "The symbol of Camelot is the power of Excalibur, and that became a more interesting theme: Whoever held the sword, held the power." By the middle of 1996, the Kroyers were allegedly fired by Howard, who later moved on to developing another project at Warner Bros. Feature Animation. Following the departure of the Kroyers, two supervising animators along with several employees in the studio's art department subsequently left the project. The film's initial producer, Frank Gladstone, left the project in February 1997 and was replaced with Dalisa Cohen. Effects supervisor Michel Gagné recalled that "People were giving up. The head of layout was kicked out, the head of background, the executive producer, the producer, the director, the associate producer—all the heads rolled. It's kind of a hard environment to work in." Eventually, Du Chau was promoted to be the film's director. Meanwhile, Reeve was replaced by Pierce Brosnan when he became unavailable to record new dialogue. In an article in Animation Magazine, Chrystal Klabunde, the leading animator of Garrett, stated, "It was top heavy. All the executives were happily running around and playing executive, getting corner offices—but very few of them had any concept about animation at all, about doing an animated film. It never occurred to anybody at the top that they had to start from the bottom and build that up. The problems were really coming at the inexperience of everyone involved. Those were people from Disney that had the idea that you just said, 'Do it,' and it gets done. It never occurred to them that it got done because Disney had an infrastructure in place, working like clockwork. We didn't