[2] The book presents a first-hand written account of Franchezzo's purported journey through various "spirit lands" or planes of existence in the afterlife following his death.
It describes how he initially finds himself in a dark realm resembling traditional concepts of Hell, inhabited by souls trapped in negative states like greed, hatred and selfishness.
With the guidance of benevolent spirits, Franchezzo is depicted as gradually progressing to higher, more transcendent realms of beauty and light.
The book provides vivid descriptions of how the spirit world's environments are shaped by the thoughts, beliefs and spiritual development of their inhabitants.
While affirming the existence of an afterlife governed by divine laws, the book does not support the concept of reincarnation back into physical life on Earth.