Mavis Miller is not a PTA mom. So no one is more surprised than her when she caves to Trisha Holbrook, the long-reigning, slightly terrifying PTA president, and finds herself in charge of the school’s brand-new DEI committee. As one of the few Black parents at this California elementary school, Mavis tries to convince herself this is an opportunity for real change. But things go off the rails at the very first meeting, when the new principal's plans leave Trisha absolutely furious. Later that night, when Mavis spies Trisha in yellow rubber gloves and booties, lugging cleaning supplies and giant black trash bags to her waiting minivan, it’s only natural that her mind jumps to somewhere it surely wouldn’t in the light of day. Except Principal Smith fails to show up for work the next morning and has been MIA since the meeting.