After his grandfather's death, the author discovers a mysterious trunk while clearing out the attic of his house. Inside, he finds unusual objects linked to occultism, pentacles, grimoires, and various documents, revealing an unknown facet of his grandfather.

The documents cover esoteric subjects and mention personalities such as Maryse Choisy, Aleister Crowley, and Gerald Gardner, as well as German and English secret societies.

The notebooks, written between 1934 and 1990 by a certain "Albert", a mysterious journalist and occultist, intrigue the author.

He decides to sort, decode, and translate these documents to reveal Albert's life, hoping that someone among the readers might shed light on his identity.

Unfortunately, some archives are damaged and the author chooses not to publish everything for confidentiality reasons. He focuses on key moments, removing passages deemed unnecessary, although some periods remain incomplete due to missing notebooks.