 Frequent comedy co-stars Fatty Arbuckle and Mabel Normand take viewers on a tour of the 1915 Panama-Pacific Exposition in San Francisco. Attractions shown include the U.S. Battleship "Oregon", the Australian convict ship "Success" (complete with such punishment devices as a flogging rack and a spiked Iron Maiden), the world s tallest flagpole (251 feet), the Court of Abundance, the Court of the Universe (with sunken garden) and the Tower of Jewels. Fatty and Mabel also visit Frisco s still-under-construction City Hall, accompanied by Frisco s then-Mayor James Rolph Jr. Also appearing in the film is opera star Ernestine Schumann-Heink.