Right off the road in the Mojave Desert, a mysterious figure murders Sterling Watson in a diner bathroom. On the road, JUDY MONARREZ and her best friend Rachel are headed to a small island off the California coast so Judy can go to a diverse writer’s retreat, as part of a talent incubator. Once there, she meets the program’s leader MARISSA SANCHEZ and her assistant BARRY, and fellow writers ABDUL, THAD, NICK and LINDSAY. They mention that there’s been online harassment against them from internet troll games. FALCO, Judy’s manager, calls her, informing her that her latest script has been turned down by producers. She tells her she’d like to do something different but Falco micromanages her career.
DETECTIVE HANSEN, Marissa’s ex-husband arrives to tell them about Sterling’s murder. Everyone is shocked, especially Lindsay who was in a long distance relationship with Abdul. As the shock wears off, Nick and Judy start flirting with each other. Marissa orders delivery for breakfast, receiving it from delivery boy LANCE, which turns out to poison Thad. Hansen begins to suspect that the killer might be someone in the writers’ group. Soon another body hits the floor: Barry. Rachel discovers that Judy left her phone behind. The killer goes after Lindsay and Judy realizes this, trying to stop him, but she’s too late. But her presence there, only amplifies Detective Hansen’s suspicions of her, along with her reluctance to fulfill her background check.
Hansen decides to detain and interrogate Judy but she refuses to talk without a lawyer. The killer attacks Marissa. Hansen comes for her protection but he’s killed as well. Nick turns out to be an accomplice of the killer who is no other than Lance, the delivery boy. Judy tries to escape from them, but finds herself in their clutches as they reveal they were killing her colleagues and friends as a statement against white, male artists being replaced.
Rachel arrives, noticing Marissa’s and Hansen’s bodies. She takes the latter’s gun and goes to Judy’s rescue, both of them confronting the killers until they’re dead. Weeks later, Judy is out of the hospital and returning home with Rachel. She gets a phone call from Falco asking her to sell the life rights to her story, but she refuses. After she hangs up, she gets another call from an unknown voice, threatening to haunt her as revenge for Nick and the Script Killer. “Bring it on,” she tells him before hanging up.