Although various plot threads can be found in the book, its real value lies in the wealth of ideas on display. It's primarily a guide to many of the important factions involved in the War in Heaven. These include Faction Paradox itself, the Great Houses, the Celestis, the Remote, and Posthumanity. A number of hints about the mysterious Enemy against whom the Great Houses at fighting are scattered through the text, but nothing conclusive. The book details many individuals, events, technologies, and concepts related to the War.
The book makes references to the Doctor Who novels Alien Bodies, Interference, The Taking of Planet 5, and The Shadows of Avalon, and it features the characters Compassion and Chris Cwej who first appeared in Doctor Who novels. A number of other parallels with Doctor Who characters and concepts can be found, but these links are not explicit. No familiarity with Doctor Who is required to appreciate The Book of the War.
