Come, then, and join the Great Basselope Expenditionary Force as it sets out to discover the secrets of the world's most elusive beast. In a story of adventure and revelations, Opus leads a reluctant crew of Great and Famous Discoverers in pursuit of the final descendants of an ancient, ferocious race. They trek deep into the forest behind their backyards and come face-to-slobbery-fanged-face with a real discovery: things are never exactly as we think.