Dastardly Prince Blackpool sends a gift to Princess Ariel that contains a device set to wipe out the kingdom unless the king surrenders.

Prince Erik Greystone is forced to postpone his marriage to the Princess of Camarand and defend her kingdom from attack by Prince Blackpool, who's wearing a monocle that empowers him to use black magic.

Vector casts the curse of crimson fever on both Prince Blackpool and King Greystone, father of Prince Erik.

Prince Erik employs a rag-tag carnival troupe to negotiate the treacherous path into Blackpool's castle where Marko awaits torture or rescue -- whichever comes first.