: Two secret groups are at odds: the Priory of Sion , which protects the secret of the bloodline, and Opus Dei , a Catholic sect seeking to destroy the Grail to preserve the Church’s traditional teachings. Key Locations & Journey

: Before dying, Saunière leaves a trail of riddles, including a Fibonacci sequence and clues hidden within the works of Leonardo da Vinci , such as the Mona Lisa and The Last Supper .

While the film received mixed reviews for its heavy exposition, it remains a famous exploration of the and historical alternative theories.

The investigation leads Langdon and Sophie from Paris to London and finally to Scotland.

The plot centers on a centuries-old conspiracy involving the . According to the film’s theory, the Grail is not a physical cup but rather Mary Magdalene , who was allegedly the wife of Jesus Christ and mother to his child.