This film is about New Zealand's longest-running radio station (founded in 1922), and the passionate group of volunteer announcers and dedicated listeners who tune in. It's a charming look back at the history of 'Radio Dunedin' (previous call sign '4XD') set against the backdrop of the city of Dunedin. The joy in this documentary comes from the people involved. They are deeply passionate about radio. They are the volunteer announcers who kept the station going through Government takeovers, arson attempts, lack of funds and numerous technical issues.