Penelope Leland has come to Ireland to study magic and prove to herself that she is as good a witch as her twin sister, Persy. But when the dashing Niall Keating begins to court her, Pen can't help being distracted from her studies. Little does Pen know, Niall is acting upon orders from his sorceress mother. And although it starts as a sham, Niall actually falls deeply in love with Pen, and she with him. Even if he halts his mother's evil plan, will Pen be able to forgive him for trying to seduce her into a plot?