What Is ‘One Night Only’ About? What Are The Rules of the Monica Barbaro & Callum Turner “Sex Purge” Movie?

Everyone wants to know what's up with the sex purge. Our expert can explain it to you.

In “One Night Only,” Monica Barbaro and Callum Turner play singles living in a world where the government has banned premarital sex. How far-fetched is that?

Monica Barbaro and Callum Turner play singles searching for a match during the one night a year when premarital sex is allowed.

Sex between singles is outlawed except for one 12-hour window a year in Will Gluck’s high-concept romp, also featuring Maya Hawke, Molly Ringwald, LeVar Burton and Julia Fox.

Coming from Universal, the studio that brought you The Purge, comes a sort of kissin’ cousin to that movie, One Night Only. Instead of a 12-hour period annually where you can kill people without consequence as is the case with Purge, the idea here is the polar opposite: It is set in New York City…

Why are single people only allowed to have sex once each year? How on earth is that rule enforced? Is third base permitted? Pull up a chair—and get ready for a deep dive.

A high-concept romantic comedy is a difficult thing to pull off. The success of any romcom is so dependent on any number of ordinary yet intangible factors — star chemistry, warmth, a general sense of goodwill toward all involved — that when you massively complicate the rules of the game, the balance is thrown off.…

"Fantastic Beasts" alum Callum Turner attended the New York premiere of his film, "One Night Only," with his pop music star wife, Dua Lipa, Monday.