On the streets of Dublin, an Irish musician and a Czech immigrant are drawn together by their shared love of music. Over the course of one fateful week, an unexpected friendship and collaboration quickly evolve into a powerful but complicated love story, underscored by emotionally charged music. Building on the original movie’s beloved soundtrack — and including the Oscar-winning, Top 40 hit, “Falling Slowly” — Once is a beautiful, moving, and hopeful tribute to the music in all of us.