Once is the inspirational tale of two kindred spirits who find each other on the bustling streets of Dublin. One is a street musician who lacks the confidence to perform his own songs. The other is a young mother trying to find her way in a strange new town. As their lives intertwine, they discover each other's talents and push one another to realise what each had only dreamt about before and work through their past loves and reveal their budding love for one another, through their songs. Once is their inspiring story.