Muriel becomes invisible when she wears a magical gem given to her by Courage, unknowingly. When she is soon captured by the government, Courage and Eustace, with the help of Dr. Vindaloo, set out to rescue her.
Muriel becomes invisible when she wears a magical gem given to her by Courage, unknowingly. When she is soon captured by the government, Courage and Eustace, with the help of Dr. Vindaloo, set out to rescue her.