The film is set in an alternate reality in which the US has for the past three years outlawed pre-marital sex, except for one 12-hour evening each year. In the world of One Night Only, pre-marital sex is a no-go zone. You have to give One Night Only credit for at least going there. Credit: UniversalFor something that’s billed as a sex comedy, it seems to actively judge sex and those who have it. Despite its frothy marketing, One Night Only is a socially regressive film that could serve as a campaign video for puritanical groups.