As one of the two protagonists in Deep Secret, Maree Mallory is living with her cousin (Nick Mallory), aunt and uncle when she is entangled in Rupert Venables' search for a new Magid. As she is a potential candidate to replace a dead Magid, Stan, she is caught by a spell to gather all potential replacements in one place. That happens to be a SF/Fantasy convention her uncle Ted Mallory, an author, is speaking at.

Maree becomes further involved in the search for a replacement Magid and endangered by a magical plot of political intrigue as unscrupulous people attempt to attain the throne of the Koryfonic Empire, located in another dimension.