An ancient Egyptian pendant with a mysterious symbol.A ruthless queen who likes to poison her slaves.Three kids from Dayton, Ohio.What could go wrong?Constance, Ernest, and George Gatsby try to help their father unravel the mystery of a mysterious pendant by traveling back in time to the sands of ancient Egypt.While in the royal palace, the pharaoh Cleopatra mistakes Constance for a prophet. She threatens that Constance must tell her the future or else she will poison Ernest and George. As time is running out, Constance makes an unexpected discovery that deepens the mystery of the Gatsby Kids' time-traveling abilities.