A modern day musical set on the streets of Dublin. Featuring Glen Hansard from the Irish band "The Frames," the film tells the story of a street musician and a Czech immigrant during an eventful week as they write, rehearse and record songs that reveal their unique love story.

The Guy works part-time helping his father who runs a small, vaccum cleaner repair business, but dreams of having his songs recorded and landing a record deal. His girlfriend has recently left him and gone to London, and he is still coming to grips with that loss and is emotionally vulnerable.

One day while busking on Dublin's Grafton Street, he meets the Girl, an East European immigrant who has moved to Dublin to start a new life for herself and currently works as a house cleaner in an upper-class residence. She is struggling financially, and cannot afford the piano she yearns for, while also being in the process of making crucial decisions about her personal life.

In a Dublin that has grown increasingly affluent and materialistic during Ireland's unprecedented economic boom, they are both outsiders, struggling with their art and their hearts. Through music, they find a common bond that brings them effortlessly together.

As the Guy and the Girl get to know each other over the course of an intense few days, their relationship blossoms as they share their music, put together a band to rehearse songs and record some demos, all of which results in them both bringing some much-needed impetus to their artistic and personal lives.

Written and directed by John Carney Once is produced by Martina Niland and executive produced by David Collins with Music by Glen Hansard and Marketa Irglova. The director of photography is Tim Fleming, and the production designer is Tamara Conboy. Costume design is by Tiziana Corvisieri with casting by Maureen Hughes. Once has been financed by The Irish Film Board and RTE.