Ireland seems to be having a problem with wizardly overlays, making "sideways" transit much more frequent and the use of spells very perilous.
Nita alerts the local Senior, who happens to be a relative of a boy, Ronan Nolan, whom she met in a restaurant and has a crush on.
Things get hectic from there on, as wizards must gather to fight an Ancient Evil, a form of the Lone Power.
Nita, aided by Ronan and her old ally Kit, is able to find the relics, at which point they go "sideways" with many other wizards to the site of a massive battlefield.
At the height of the battle, Balor, a Fomorian king and an embodiment of The Lone Power, is slain by the Spear of Light.