The film is a scathing, anti-establishment comedy focusing on the Northern Irish rap group Kneecap. Featuring Kneecap, a real-life rap group composed of Mo Chara, Móglaí Bap and DJ Próvaí, they are famous for their Irish Gaelic rap, and their nationalist works often touch on the Northern Ireland issue. In 2019, they were condemned for shouting "Get the Brits out now" in a bar where Prince William and Kate Middleton had visited earlier.