When a priceless diamond called ‘The Eye of Ra’ goes on display in London, Tarot learns that the diamond has magical properties, and that its light is capable of turning people into six-inch-high chalk statuettes. The diamond is also sought by Ceribraun, a crippled chess-master, who, aided by his master computer and his butler, Fredericks, begins a devious campaign to steal the diamond. (thetvdb.com)