Once

A guy and a girl meet on the streets of Dublin while she, a Czech immigrant flower seller, listens to him perform as a guitarist/vocalist street musician. Although it is something totally different which makes them decide to meet again - specifically she learning that he also repairs vacuum cleaners as part of his father's business, she needing her vacuum cleaner fixed - it is their musical interests which bond them together, she a classically trained pianist and vocalist. After hearing her play and sing and having an impromptu jam session working on one of his compositions, they decide to collaborate on some song writing, and in recording some of his/their songs if they can raise the necessary funds for the recording studio time. Through their time together, their shared goals leads to an emotional connection, which is complicated by things happening in their personal lives, those personal issues which are reflected in their songs.