The book is the second in the series, the first being "Commodore: A Company on the Edge." The first book covered Commodore Business Machines from 1973 to 1984. The second book should cover CBM from 1984 to 1994. The first book was an expansion of first half of the original, single book, "On the Edge: the Spectacular Rise and Fall of Commodore."
If the second book expands on what was related in the last half of "On the Edge," then not only is the story of the Amiga told but also the stories of CBM's other computers in those later years -- the Commodore 128, the Commodore LCD, the Commodore 900, the Commodore 65, the Commodore 64GS, and the Commodore 64C.