The story of former Hollywood star Grace Kelly's crisis of marriage and identity, during a political dispute between Monaco's Prince Rainier III and France's Charles De Gaulle, and a looming French invasion of Monaco in the early 1960s.

Nicole Kidman
as Grace Kelly

Milo Ventimiglia
as Rupert Allan

Paz Vega
as Maria Callas

Tim Roth
as Prince Rainier III

Parker Posey
as Madge Tivey-Faucon

Frank Langella
as Father Francis Tucker

Derek Jacobi
as Count Fernando D'Aillieres

Geraldine Somerville
as Princess Antoinette

Roger Ashton-Griffiths
as Alfred Hitchcock

Nicholas Farrell
as Jean-Charles Rey