Frannie O'Neill is a young and talented veterinarian living in Colorado. Plagued by the mysterious murder of her husband, Frannie throws herself into her work, but it is not long before another bizarre murder occurs and Kit Harrison, a troubled and unconventional FBI agent, arrives on her doorstep.
Late one night, near the woods of her animal hospital, Frannie stumbles upon a strange, astonishing phenomenon that will change the course of her life forever: an eleven-year-old girl named Max.
With breathtaking energy, Max leads Frannie and Kit to uncover one of the most diabolical and inhuman plots of modern science.