While still adjusting to the complications the dinosaur has added to their relationship, Regina and Stanley stumble across shocking discoveries and puzzling information. Even as they delve ever deeper into the subterranean world beneath New Washington, so too do they learn that there is more to Stanley's dinosaur body than they originally expected. Meanwhile, Dr. Harland Wolf attempts to regroup from his encounter with Stanley and Regina, but runs into the mysterious Mr. Warren Baker, leading to more intriguing revelations.