Marco and Polo might have been content to stay house cats forever. But Marco has read all about ranches and decides to find one, while Polo longs to locate his mother. And then Mr. Neal leaves the side door open by mistake! Now, after their Grand Escape, their lives are full of opportunities they never imagined. Their search for food and a dry place to sleep leads them to Texas Jake, the ornery cat-leader of the Club of Mysteries. With the help of Carlotta, Marco and Polo try to earn admission into the club. Before they can join, they must solve three dangerous mysteries.