The story follows a recent divorcee who spends her daily commute fantasizing about a seemingly perfect couple who live in a house that her train passes daily, but something shocking happens there one day.
In this modern creature feature, a scary internet meme called Grimcutty stirs up panic amongst all the parents in town, convinced it's making their kids harm themselves and others. When a real-life version of Grimcutty starts attacking teen Asha Chaudry, her parents believe that she's cutting herself as part of a challenge. With her phone taken away and no one who believes her, Asha has to figure out how to get through to her parents and stop the Grimcutty once and for all.