Holocaust survivor Zoltan "Zoli" Gluck goes from a childhood in rural Hungary, through the horrors of World War II, to a New York City art dealer with a gallery in Provincetown, Massachusetts. He follows this unlikely career path to the 1987 ArtExpo at the Javits Center where he reunites with a painter who was in a concentration camp with him as a child. Their rekindled friendship propels Zoli into an unintentional investigation of their shared past. Through an odyssey that spans decades and crosses continents, Zoli uncovers a betrayal that occurred on the day they were both liberated from the concentration camp Mauthausen, and finds peace in the answers he didn't know he needed to hear in a place he never thought he'd see again.

Based on actual events, Red Danube is told over a lifetime where the past and present coexist in a swirl of allegories that reflect issues we continue to face. Influenced equally by the works of Isaac Bashevis Singer, Philip Roth, and Bela Tarr, David Gluck takes an individualized approach to exploring themes of war, the Holocaust, and the effects of the diaspora on all generations involved.