Britain's rave scene went underground once before, driven there by tough new laws in the early nineties, and journalist Clive Martin tracks its second act a quarter-century later. Nearly half of England's nightclubs have closed in the past decade, and the film follows the young organizers who have filled that gap by breaking into disused warehouses and squats with bolt-cutters, exploiting gaps in property law to throw parties nobody licensed. Martin films the scene from the inside: nitrous balloons passed around at dawn, social media used to spread word of a location at the last possible minute, and the constant low-grade paranoia of knowing police could shut things down at any moment. Officers argue they are responding to drug harm and property damage; ravers argue the raids and arrests make the scene more dangerous, not less, and the film sits with a case where a police intervention turns violent. Fatalities at some parties have already triggered national media coverage, and the film treats the question of whether this culture survives as genuinely open rather than settled.