Kneecap is set in West Belfast in 2019. Fate brings together disillusioned music teacher JJ with self-confessed 'low life scum' Naoise and Liam Og, changing the sound of Irish music forever. Under the name Kneecap, their band begins moulding the language to fit their tough, anarchic, hedonistic lives. A language encumbered with forty words for stone now has one for stoned. But to get their voices heard the trio must overcome police, paramilitaries and politicians as the future of the Irish language erupts into the public arena - with them at the centre. Yet their worst enemies are often themselves, as family and relationship pressures threaten their dreams, and their illegal exploits draw condemnation from all sides.