A 46-year-old divorcee whose beloved only child has just left for college, Eve Fletcher is struggling to adjust to her empty nest when one night her phone lights up with a text message. Sent from an anonymous number, the mysterious sender tells Eve, “U R my MILF!” Over the months that follow, that message comes to obsess Eve, who can’t curtail her interest in MILFateria.com, which features the erotic exploits of ordinary, middle-aged women like herself. Meanwhile, Eve’s son Brendan discovers that his new campus isn’t nearly as welcoming to his hard-partying lifestyle as he had imagined. Both mother and son find themselves enmeshed in morally fraught situations that come to a head on one fateful November night.