Hugo the troll's arch-enemy, the evil Scylla, has returned and this time has found a way to make herself the most powerful witch of all time and take over the entire world. For this, she requires a magic potion to be made from the extremely rare black diamonds that are to be found only in the Jungle Island where the primitive native Kikurians live, so she enslaves them all and forces them to work day and night in search of the black diamonds. Scylla is now busy putting all of her magic into the production of the black diamond potion but she has deployed her henchman's Don Croco's pirate army to guard the island.
