But for viewers, that’s essentially it: The Purge, but for casual sex, which is illegal. Is the New Monica Barbaro Movie One Night Only Formally Connected to The Purge? The broader point, however, is that non-hetero folks are more accustomed to having their sex lives litigated and therefore may be perhaps better-equipped to deal with a sex purge in terms of mental health. How Do the Characters in the Movie One Night Only Feel About All This Sex Purge Business? If Owen and Allie Are Romantics at Heart, But Also Not Fans of the Law, Why Are They Even Bothering with the Sex Purge?