About Raimund is a Latin teacher and an ancient languages expert. His life is transformed by a young woman on a bridge in the Swiss city of Bern, whom he saves from jumping to her death in the waters below. Raimund is intrigued but the woman disappears, leaving her coat. Inside it is a book by a Portuguese doctor which contains a train ticket. He uses it, setting off on a journey to Lisbon. While looking for the author, Raimund revisits a dark chapter in the country's history and unveils a tragic love triangle. He is drawn into a high-stakes puzzle. Ultimately his journey transcends time and space, touching on matters of history, philosophy, and medicine, encountering love and evolving into a liberating search for the true meaning of life.