It is 1914, and twenty-five-year-old Frances Marion has left her (second) husband and her Northern California home for the lure of Los Angeles, where she is determined to live independently as an artist. But the word on everyone's lips these days is "flickers"—the silent moving pictures enthralling theatergoers. Turn any corner in this burgeoning town and you'll find made-up actors running around, as a movie camera captures it all.

In this fledgling industry, Frances finds her true calling: writing stories for this wondrous new medium. She also makes the acquaintance of actress Mary Pickford, whose signature golden curls and lively spirit have given her the title of America's Sweetheart. The two ambitious young women hit it off instantly, their kinship fomented by their mutual fever to create, to move audiences to a frenzy, to start a revolution.

But their ambitions are challenged both by the men around them and the limitations imposed on their gender—and their astronomical success could come at a price.