Zero, an ancient soul collector, is perceived to have gone insane. Instead of taking corrupt souls and making them do penance he is also taking good souls. Only female soul collectors are permitted to take good souls. Males are forbidden to do so. Laura finds herself prisoner in Zero's world when he takes her soul from Soma. Anu can't shake this profound feeling of loss. When the female soul collector Soma comes to Heaven looking for help in stopping Zero, he is unable to refuse her. Knowing it is crazy for an angel to take on an ancient soul collector, Anu is compelled to help Laura, the woman he can feel, who is trapped in Zero's hell. What is it about this human that draws him to her? All he knows is that he has to stop Zero whatever the cost.