Driven by the thought of being the father of Paul, the eldest son of his childhood friend Katharina, Juri Hoffmann stays in his hometown Eisenach instead of returning to his adopted country Canada.  In fact, it turns out that Juri is Paul's father and Paul, who has just opened his own medical practice in Eisenach, reacts very disturbed to this information.  Juri continues to have problems with his dementia-stricken father, who barricades himself in his house because he imagines the danger of an "imperialist invasion".