The book is divided into eleven chapters, each of which is a recounting of an experience the author had in some remote part of the world.

Narby's recounts a journey to the Peruvian Amazon in 2001, and recalls his September 2001 canoe trip with a Matsigenka Indian on the Urubamba River.

[4] He claims that, when in a trance, shamans communicate using their minds with animals and plants, drawing parallels with similar behaviour exhibited in religion.

[5][6] Kirkus reviews points out that some of Narby's observations about mold and plants are not new information, but also notes they are "nicely summarised".

[5] Swami Gopalananda, writing in Ascent Magazine, notes that the book lacks the personal discovery elements that were present Narby's first book The Cosmic Serpent and assesses that while Narby asks good questions, there is a lack of answers provided.