Zoinks! The Scooby Gang needs you! Join them at a live enactment of a real medieval tournament. But, beware! A ghost knight has come back to enforce an ancient curse. He's after anyone who dares to wear the fabled crown of King Arthur. Uh-oh! Someone has just put on the crown! And here comes trouble!
To steal the fabled crown of King Arthur and sell it in order to get the money back, but not tell Murray about it. Then, he'd wait until The Round Table restaurant went bankrupt, then buy out his own brother's half and run the restaurant alone.