17-year-old French girl Fanny travels to Germany for the first time to visit her pen pal Lena in Leipzig. Fanny is shy, but Lena already knows exactly where she wants to go and is an eco-activist. After a bumpy start, the two teenagers quickly become close friends. Fanny is determined to please Lena - and deals creatively with her own biography. When Lena comes to Strasbourg for a return visit, Fanny's identity construct threatens to come undone.