A portrait of Leonard Bernstein’s singular charisma and passion for music as he rose to fame as America’s first native born, world-renowned conductor, all along following his ambition to compose both symphonic and popular Broadway works.

Seasoned musician Jackson Maine discovers—and falls in love with—struggling artist Ally. She has just about given up on her dream to make it big as a singer—until Jack coaxes her into the spotlight. But even as Ally’s career takes off, the personal side of their relationship is breaking down, as Jack fights an ongoing battle with his own internal demons.