Grace has a complicated family. Her dad is Simon Artemis, a billionaire and ruthless social climber. She's the product of an affair he claims not to remember, and Grace and her mum were left to fend for themselves. When her mother dies and she's rejected by the very people who should love her, Grace transforms her anger into something useful: killing off this estranged extended family via morbidly creative means. Grace is clawing her way towards revenge and a hefty inheritance, but her mission only pulls her further away from what it is she really needs.