The Black Knight Gumby plays with a giant electromagnet on a crane in the toy store, which accidentally strips the armor off of a knight who was passing by. As they sort the mess out, Gumby learns that the knight is looking for someone who can fight fires. Gumby decides to borrow a toy fire engine, and he and the knight arrive at the kingdom, where Gumby learns of the kingdom's food shortage due to several fires, and finds the cause of the fire shortly afterwards: A dragon. Gumby puts out the fires, berates the dragon for its actions, and finds out about the Black Knight, who has placed a spell on the dragon causing the burning of the wheat...