Fanny is 17 and still looking for herself. She struggles to make friends. When she goes to Germany, she meets pen pal Lena, who dreams of getting involved politically. Fanny is troubled. To please Lena, she is ready to do anything.

Fanny, a 17-year-old schoolgirl from France, goes on a language exchange trip to Germany. In Leipzig, she meets her pen pal Lena who is the same age as her and who is eager to become involved in political activism. In order to impress Lena, the rather shy and withdrawn Fanny invents a different life for herself - but she quickly becomes trapped in her deceit.