Barbara the Fair with the Silken Hair (DVD)

A magical underworld king demands that the Czar give up his only son upon his 18th birthday. The Czar attempts to fool the king with some tomfoolery involving identity-switching between his son and a commoner. Complications arise when the daughter of the king (Barbara, herself a powerful magician) requests a human suitor but wants nothing to do with the Czar's son. What follows is a series of events filled with plot twists and intrigue.