Daisy Weal is gifted with extraordinary powers. Her early years were spent learning how to control them, learning how to fit in and learning how to be human. Daisy has just celebrated her sixteenth birthday when the Crenian comes to earth. His race had been wiped out by a genetic shift that had been introduced centuries ago, and instinctively his first act is to attack Daisy, before he realises that her powers are at least equal to his own. Eventually he joins forces with her and together they unravel the mystery of his race's condition, and set out to prevent the same thing from happening to the human race. Daisy and the Crenian are getting uncomfortably close to the truth and, as a diversion, the President of the United States is kidnapped and Daisy's friends start to disappear. She discovers that a sinister plot is being hatched by the being that she has seen as her friend and mentor. Once more she calls on the Crenian and together they meet the enemy in a final confrontation.