Young Grace Kelly has the world at her feet. MGM's rising queen is poised to win the Oscar, but she's tired of the studio's increasing restrictions on her life. When an unexpected friendship develops between her and Prince Rainier of Monaco, she faces the tempting possibility of a new role. But life isn't like the movies. Twenty years into her crumbling marriage, Grace finds herself frustrated and disillusioned. Conflicted by notions of family, career, and the very nature of womanhood the world's loneliest princess searches for purpose beyond the labels and headlines.