In a post-apocalyptic world, a deadly virus has ravaged civilization, leaving chaos and violence in its wake. The only safe haven is the isolated island of Helgoland in Germany, where residents must sacrifice one of their own whenever a new person is born to ensure resources are sufficient. Harsh laws govern the island, with offenders facing a grim fate determined by a mock vote. Amid this bleak existence, a selfless grandfather sacrifices himself so his newborn granddaughter can live.