The author does a revealing job of covering most aspects of UFO phenomena, including implants and abductions, asserting the US government uses both for mind control. He also mentions his own involvement in the "Philadelphia Experiment" where the US military allegedly transported a manned warship through space-time.
He covers the "extensions" of modern Physics behind "reality engineering" for interstellar travel, but, as a Physics graduate and a serious UFOlogist, I found the physics of this ("twisters & spinners") superficial and incomprehensible. Bare-bones skeleton assertions rather than meaningful explanation.
Half the book is written by his co-writer, mostly his own spiritual & UFO ideas, with strong Scientology leanings. The closing remarks that "our time line has diverged from the Creator's, who is now absent from our world" is pure intellectual fantasy on the author's part, since anyone who has tapped Christ Consciousness / Buddha Nature through their own spiritual practice will know from experience, beyond doubt, that the Creator is present in every living thing, especially oneself.
Despite the book's title, a mere five pages of the text are devoted to life in Pleiadean society. They're interesting in their own way, but I have to wonder whether they're authentic or science-fiction.
If you're interested in implants, government conspiracy, and extra info on Philadelphia, it's worth a read; if you're interested in the Pleiadeans, forget it.