Seventeen-year-old Snow has spent her life locked in the Whittaker Psychiatric Institute, but deep down, she knows she doesn't belong there. When she meets a mysterious new orderly and dreams about a strange twisted tree, she realizes she must escape and figure out who she really is.

After Snow breaks free and races into the nearby woods, she stumbles into icy Algid--her true home--with witches, thieves, and a strangely alluring boy named Kai, none of whom she's sure she can trust. As secrets are revealed, Snow discovers that she's on the run from a royal lineage she's destined to inherit, a father more ruthless than she could have imagined, and choices of the heart that could change everything . . . including Snow's return to the world she once knew.

With Algid's fate resting in her hands, will Snow embrace her destiny, even it means paying the ultimate price?