Two high school best friends, Sadie and McKayla, obsess over social media, particularly their true crime blog. Seeking fame and followers, they hatch a plan to boost their site's popularity by tracking a real-life serial killer, Lowell Orson Lehmann, who has been terrorizing their small town. The duo captures him instead of turning him in and learns his methods. As they execute their own killing spree, they cleverly disguise the murders to resemble Lehmann's work, all while covering these events on their blog to attract more attention and followers. Their gleeful and ruthless commitment to cementing their status as influential crime bloggers remains undetected by their peers and authorities.

As their online fame grows, the two girls revel in the attention but face increasing challenges. Their friendship is tested by jealousy and rivalries, especially as Sadie's crush Jordan unknowingly complicates matters due to his father's position as the local sheriff. Balancing social life, school obligations, and their dark pursuits becomes perilous. As suspicions arise, the girls' ability to manipulate those around them with their blend of charm and wit comes into play. The increasing scrutiny heightens the tension as they attempt to keep suspicion away from their antics, all while ensuring their status as the ultimate purveyors of crime in their community continues to rise unchecked.