it's the preserved transcripts of Thoth, the Atlantean Priest-King, who founded a colony in ancient Egypt after the sinking of Atlantis. It tells a modern day story of how the dark forces (TPTB) are creating havoc, but in the end, the light forces (us) will always win.

There's so much more to it than that such as meditation, OBE's, time/space continuum, etc, but that's the story in a nutshell.