Bernhard Pucher’s debut feature compresses an entire sub-genre — the contamination siege — into a single derelict factory, and gives its protagonist the one affliction that makes the film’s central threat feel earned rather than arbitrary: an extreme, medically-diagnosable fear of dirt. Ravers earns its irony from the opening sequence. Becky, Georgia Hirst’s germaphobic journalist, would rather face the story of a lifetime than the unwashed bodies she has to move through to reach it.

The contaminated batch of Regenerize — a fizzy energy drink synthesised in the same factory the rave occupies — is Pucher’s central formal device. Unlike most horror MacGuffins, it works two arguments simultaneously: it literalises the anxiety of mass-market stimulants, and it uses contamination as the film’s governing grammar. Everything the camera reaches is potentially toxic. For a germaphobe, and for an audience with any memory of infection, this is not metaphor — it is the situation.

Hirst anchors the film with a physicality that B-movies rarely earn. Her Becky is not the passive recipient of the horror but its diagnostic counterpart: the compulsive hand-wipes, the recoil before contact, the flinch at every wet surface. Hirst plays these as a coping mechanism, not comic relief. Danny Kirrane’s Ozzy — Becky’s biochemist cousin and inadvertent accomplice — provides warmth and tonal balance. Natasha Henstridge, in a brief supporting role as Becky’s editor, brings name recognition without displacing the younger cast.

Pucher works the single location like a stage director who knows exactly which walls carry weight and which doors become traps. The factory floor functions simultaneously as the rave’s operating space and the siege’s perimeter — the geography of pleasure becomes, by way of a spiked drink, the geography of danger. The film’s most satisfying invention is its music-as-sedative logic: the contaminated ravers can be temporarily pacified by the same bass frequencies that drove them into frenzy. It is a joke about rave culture’s Pavlovian relationship with the drop, and briefly a genuine formal twist on the zombie cure.

Ravers is slight — its 90 minutes carry jokes that do not all land, and the horror stakes never rise above competent genre mechanics. But the film’s core inversion, of germaphobia from neurosis into survival tool, has the precision of a production working on a fraction of the budget that premise deserves. Pucher does not inflate what the film is. He makes it exactly what it is: a one-night, one-building, one-contaminated-drink ride with a lead who keeps asking more of it than the budget can answer. In that gap — modest but real — the film finds its value.