Callista Lanart is the Under Keeper and sworn virgin of Aryllin Tower. Leoni Hastur is the Keeper. While on a visit home, to Armida, Callista is captured by the Catmen. No one in her family of strong telepaths can reach her mind, until a Terran, Andrew Carr, (see entry under Andrew Carr) links with her in the Overworld, where they fall in love. Following this link, she is rescued and the Catmen destroyed.
Callista and Andrew are joined in a freemate marriage, but are unable to consummate it because of Leeoni’s alterations of her psi channels . Unable to undo her rewiring, they turn to Damon (see Damon Ridenow), her twin sisters husband.
With their marriage still unconsummated, Callista and Andrew’s, the whole family rides to Thendara where her brother has been killed. Leonie in her Hungar for Callista, threatens to force her to return to the tower, separate her from Andrew, burn out Damon’s laran, and force her twin sister to leave Damon. Having found the secret needed to allow Callista to change her channels between sex and laran, Callista and Andrew consummate their marriage and join Damon and her sister in an over world fight between Aryllin Tower and their Forbidden Tower. They win and become free to practice their Laran in their own way.