Princess Farah refuses to marry Sinbad until Prince Kassim, her brother, is able to give his consent. However, the Prince's wicked stepmother, Queen Zenobia, has changed Kassim into a baboon in order to have her own son crowned as caliph. Sinbad, his crew, the Princess and the transformed Prince travel to a distant land, fighting every obstacle Zenobia places in their path, to seek the advice of a legendary wise man who can possibly tell how to end the spell.

ritish Horror veteran Michael Gough (Sleepy Hollow, The Legend of Hell House) steals the film as the Mad Doctor who indulges in his nasty medical experiments with the aid of a dwarf sidekick, an army of leather-clad bikie guards and a Rolls Royce with a built in decapitation device!

Sinbad and his crew intercept a homunculus carrying a golden tablet. Koura, the creator of the homunculus and practitioner of evil magic, wants the tablet back and pursues Sinbad. Meanwhile Sinbad meets the Vizier who has another part of the interlocking golden map, and they mount a quest across the seas to solve the riddle of the map, accompanied by a slave girl with a mysterious tattoo of an eye on her palm. They encounter strange beasts, tempests, and the dark interference of Koura along the way.