Wyoming, 1950. Indiana Jones and his friend Grey Cloud have obtained a sacred ceremonial pipe and end up in a snow-logged cabin. When Jones finds a soprano sax, he is reminded of his college days in Chicago 1920. Indy was waiting tables at Colosimo's and had become obsessed with Jazz music. He managed to befriend Sidney Bichet who encouraged him to practice the soprano sax. But then Colosimo was murdered on the doorstep of his restaurant and Indy got caught up in the investigation together with his roommate Eliot Ness and young reporter Ernest Hemingway.

Prof. Indiana Jones points out to a museum curator that a picture of the Russian revolution is labeled wrong. He knows it for sure because he was there. Working as a translator at the French embassy in Petrograd, Indy had befriended a group of young Bolshevik students. On his 18th birthday, they took him to hear Lenin himself giving a speech. Unfortunately, the speech inspires them to a premature revolution attempt.