Join Mark Twain and his Masonic travelers on the Panama Railroad for a trip across the isthmus in July 1868 as a precursor to the adventures of Sam Stone who takes a trip back to the Republic of Panama to attempt a reconciliation with his first ex-wife, Regina Jones Oliveria, nicknamed Jonesy. Old and new crooks try to murder them, and a final showdown takes place at the site of Sam and Jonesy’s first date, the famous Fort San Lorenzo.