In 1930s Vienna, ten-year-old Sophie begins weekly visits to her grandfather Sigmund Freud's study. Initially awkward encounters between the distracted psychoanalyst and his polite but troubled granddaughter evolve into genuine intellectual sparring as Sophie matures and Nazi influence spreads through Austria. When the Gestapo finally arrives at Berggasse 19, Sophie faces an impossible choice: escape to safety in London with her grandfather or remain with her mother in increasingly dangerous Europe. Set against the backdrop of fascism's rise, the play explores the competing claims of family loyalty, intellectual legacy, and survival.