Jemma's toxic boyfriend has run off with her best friend, leaving Jemma alone in their flat, and she can't afford the extortionate rent on her own. She's aimless, depressed and, above all, furious. Slowly but surely, her fury finds its focus: landlords. If only something could be done about them. When Jemma's landlord has a fatal accident while carrying out a property repair, she stumbles across her life's mission: to punish as many landlords as possible. She begins targeting landlords who have appeared on her favourite binge-watch, a home-improvement TV show where their greed is laid bare. It's a messy job, but someone's got to do it. Governed by her own rules, Jemma is convinced her actions are just - but how long before this vigilante turns villain?