Beverly Sutphin appears to be the ideal suburban housewife, living an uneventful life with her family in Baltimore. She is courteous to her neighbors, dotes on her husband, and is supportive of her teenage children. However, underneath her cheerful exterior lies a darker side. Beverly becomes unhinged when societal norms are violated and resorts to extreme measures to correct perceived wrongs. Her offenses range from small irritations, like failing to recycle, to more significant grievances. Despite her violent methods, she manages to conceal her actions from both her family and the law for some time, maintaining her guise as the perfect homemaker.

As Beverly's behavior grows increasingly erratic and brutal, suspicions begin to arise within her community. Meanwhile, her family's blissful ignorance starts to wane as peculiar incidents accumulate, leading them to question her integrity. Law enforcement closes in, trying to make sense of a series of bizarre and gruesome events tied together by an elusive and seemingly wholesome perpetrator. Beverly's carefully constructed facade starts to crumble as she grapples with the pressure of maintaining her double life, leading to unforeseen consequences that challenge the very fabric of her domestic existence.