Ben and Izzy meet Ibn Al Haytham, a gifted scientist who pretends to be crazy in order to deter the wrath of the caliph. The boys are searching for the scepter of Ramses II with clues using optics left by Ibn Al Haytham.
Ben and Izzy are searching for a musical instrument in Baghdad, where they meet philosopher, Al Kindi. The boys get into trouble and Yasmine must turn to the Grandfathers for help.