In a post-petroleum future, Bigger MacGregor reigns as a brilliant, inventive designer of human-powered technology. Products of his isolated workshop are famous for craftsmanship and innovation. The rhythm of his life and work is overthrown by the enigmatic Eanna, whose arrival from nowhere in a broken pedal-car signals days of discovery, and nights of danger and passion. An erotic bond is their key defense against bizarre intruders, as they fight for their lives across multiple realities, to the germ of a new idea.