Meredith and Theo are separated from their parents as children, like all protectors and guardians before them, who are descended from various mythical creatures. Since then, they have trained together for their future roles.
Meredith knows she likes girls, but is reluctant to get close to anyone, knowing that she will have to move on and leave them. Theo likes girls too, but as a descendant of Shape Shifters, he uses his powers to prevent them from ever knowing his true self.
At the age of fifteen, Meredith is given her first charge, Alex. He is destined to do something amazing, although Meredith doesn't know what that it yet. Meredith and Theo seek help from other protectors and guardians, but can they succeed in keeping Alex and his destiny safe?