Drama based on Pascal Mercier's bestseller. A desperate young woman and an intriguing book send staid Swiss professor Raimund Gregorius on a sudden quest to Portugal.

A desperate young woman and an intriguing book send staid Swiss professor Raimund Gregorius on a sudden quest to Portugal. Seeking the author, Raimund encounters mystery instead. He gradually pieces together decades-old secrets from people who, in their youth, united against the cruel Salazar dictatorship.