Kayley longs to be a knight of Camelot like her late father, Sir Lionel. One day, King Arthur's sword, Excalibur, is lost in a theft attempt to steal it by the psychopathic Sir Ruber.
With the help of a blind wanderer, Gareth, and a dragon with 2 heads, Devon and Cornwall, Kayley must find Excalibur, and return it to Arthur.