Sarba, daughter of Lord Cozuman, the High Sorcerer of the Yadu, hates and fears the Xerappan people whose land the Yadu have taken. Sarba's mother is an invalid following a Xerappan terrorist attack on her life. Sarba is sent on a mission into the Xerappan colonies to investigate a possible threat to the Yadu's domination. But as Sarba and Tekran, a young sorcerer, travel and meet Yadu people who are sympathetic to the Xerappans, she is led to question...