Thief Axel travels to Zahambra to steal a hidden piece of black crystal which can make an evil version of Mega Mindy. Mieke and her friends travel there too to stop him before it's too late..

Dressed as a Moorish warrior, fiend Axel steals a piece of black crystal from the tomb of the first sultan of Zahambra and puts it in a duplicator. He uses it to make an evil 'black' copy of Mega Mindy, but it's too weak to survive and he flees. Grandpa Fonkel receives an old inventors classmate, now ex-con, Klaus, who explains the machine, which he created, can be made to work but only with a huge black crystal. The only one was hidden by the first sultan of Zahamabra after ending a major disaster it caused, being a meteorite which heralded doom. So Toby and friends travel there and find Axl on their road, but also have to deal with the hedonistic sultan and a traitor.—KGF Vissers