After a disturbing confrontation with an aggressive priest, Althalia Cabrera's abuela Isadora has collapsed, and Althalia is arrested while trying to protect her. Now the young bruja—for the first time without Isadora's guidance—must attempt to summon both her innate strength and her years of training in the craft to try to save her family's beloved matriarch. But it may already be too late to take down the dark forces that seek to strip both of the Cabrera brujas of their power.