In this episode of An Evening With Groucho, Groucho Marx takes the audience back to his early days in vaudeville, specifically during the tumultuous period of World War One. He recalls his time performing as a German comedian in Toronto, where the atmosphere was charged with the anxieties of war. The sinking of the Lusitania, a significant event that stirred public sentiment against Germany, looms large in his memory, setting the stage for a performance filled with both humor and tension.