Iris Kohl lives in a world populated by murky shadows that surround, harass, and entice unsuspecting individuals toward evil. But she is the only one who can see them. She's had this ability to see the shadows, as well as brilliantly glowing light figures, ever since an obscure, tragic incident on her fourteenth birthday three years earlier.

Although she's learned to cope, the view of her world begins to shift upon the arrival of three mysterious characters. First, a handsome new teacher whose presence scares away shadows; second, a new friend with an awe-inspiring aura; and third, a mysterious and alluring new student whom Iris has a hard time resisting despite already having a boyfriend.

As the shadows invade and terrorize her own life and family, she must ultimately revisit the most horrific event of her life in order to learn her true identity and become the hero she was meant to be.