"My name is Dylan Dog, I'm a nightmare inquiring, but lately I'm a failed ..." so begins the new adventure of the beloved Old Boy, now exhausted and tormented by strange nightmares for several nights hiding something truly terrifying pushing him to depression. A terrifying adventure awaits our Dylan, an adventure that will haunt his mind through his sleep remembering the steps of the "Divine Comedy" opera. In the company of Mr. Dog, there will be his loyal assistant Groucho, the old Inspector Bloch and many others. Some will help him, others will want to kill him.