A group of aging rockers pull a fast one on the youth-obsessed music industry by hiring a group of photogenic teenagers as their stand ins, and releasing a scorching punk-pop single that rockets up the charts in this comedy inspired by actual events. Back in his day, Johnny Jones (Phil Daniels) and his band The Weapons of Happiness were all the rage. A few decades later, they're just a bunch of old, out-of-work musicians reminiscing about the glory days. Then one day, during a particularly inspired jam session, The Weapons of Happiness crank out a tune that's a surefire hit. Trouble is, every record executive and DJ they approach rejects them as too old and tired to turn out a hit. But that only fuels Johnny's determination to prove his detractors wrong, and when the band recruits a group of fresh young faces as their media proxies, The Weapons of Happiness find themselves in the midst of a unexpected comeback.