Chatting it up with bendy WASPs is the last thing on Coco Guthrie’s mind during her 8:30 a.m. yoga class. Having made her fortune as the world-renowned inventor of Butt-B-Gone derriere cream, Coco still doesn’t feel like she belongs among the upper class— until she attends the swankiest Halloween soiree in Greenwich, Connecticut, where three of her fellow morning yogis shared her brilliant idea to appear as Sarah Palin. Soon it’s clear that a love of stretching isn’t all this accidental sorority—which includes a single mom with echolalia, an entertainment reporter who charms the pants off handsome stars, and a drama-prone producer with a taste for drag— have in common.

When the four mischievous Sarahs wander away from the party to sneak a peek at the mayor’s neighboring estate, they are stunned to find him adorned in leather and latex, and rolling up a woman’s body in a Persian rug. To make matters worse, someone has spotted the spying Palins. Someone who threatens to expose their torrid affairs in business and the bedroom. Now the unlikely foursome must use all their wits and wiles to get to the bottom of the kinky crime. But will their budding friendship be strong enough to protect their deepest secrets?