Europe in the not-too-distant future. Environmental disasters have become commonplace. The population has adapted brilliantly: every bag contains gas masks and protective suits. Only gas mask filters are in short supply. During an incident, a couple meets for a rendezvous. In a quiet place, they connect their masks with a "love tube." Just as they are overcome with passion, their gas mask filters are stolen by a thief. The young couple's lives are in danger. Their "breathless" chase through the world of tomorrow begins.