Single mom Flora is at a loss about what to do with her rebellious teenage son, Max. Her efforts to keep him out of trouble lead to a beat-up acoustic guitar, a washed-up LA musician, and harmony for this frayed Dublin family.
"Mad" Mary McArdle returns to Drogheda after a short spell in prison for something she'd rather forget. Back home, everything and everyone has changed. Her best friend, Charlene, is about to get married and Mary is maid of honor. When Charlene refuses Mary a 'plus one' on the grounds that she probably couldn't find a date, Mary becomes determined to prove her wrong.
Rick, a washed-up wedding singer, and Danny, a fading boy band star, bond over music and a late-night jam session. When Danny turns Rick's song into a hit, Rick sets out to reclaim the recognition he believes he deserves.