Set in a small Norwegian spa town, "An Enemy of the People" is about Doctor Thomas Stockmann, a man of principles who discovers that the spa’s water is poisoned. He naively expects the mayor to greet the truth with gratitude, but the town’s political machine will brook no threat to its prosperity, even if it means letting thousands of people be sickened. Doctor Stockmann becomes a whistleblower, and the public campaign against him mounts, setting up a moral battle between a lone truth teller and a society desperate for self-preservation.