The narrator and dogs go on a walk through the woods and make several discoveries from different time periods. They find an extinct flower from the Cretaceous period, signs that sauropods may have passed through, and a fern that can grow to 180 feet tall. They also come across evidence of prehistoric hammernose ants, a saber-toothed cat crossing, and remnants of ancient civilizations like Neanderthal middens and a Roman wall. During their walk, they witness a pterodactyl battling a turkey vulture overhead. The walk provides a temporal journey through history on the trails.