A young boy's dual heritage is celebrated with gentle humour in this tale of two grandads determined to pass on their love of music to Aston, their grandson. Grandad Harry, a Lancastrian, plays trumpet whilst Grandad Roy, from Trinidad, plays the steel drum, both are enthusiastic champions of a distinctive musical tradition. When a replacement band is needed for the boy's school summer fair, he persuades his grandfathers to bring together their fellow players in brass band and steel band for a unique musical performance..