The film centers the period of time when Monaco was in a conflict with France and Grace Kelly worked to prevent a coup. The actress is playing opera singer Maria Callas, who was having an affair with a wealthy Greek man named Aristotle Onassis.
Olivier Dahan is directing from a script provided by Arash Amel. Pierre-Ange Le Pogam is producing with Uday Chopra.
No production details have been revealed for this project.