Plum Winter has always lived in the shadow of her famous influencer sister, Peach Winter. So when Peach is invited to a festival for influencers on a private island in the Caribbean, Plum steals the invite and takes her two best friends Sofia and Marlowe on a spring break they won't forget. However, when they get there they find it's a creepy island with no festival, and only seven other influencers. Then people start to die and Plum learns someone has lured them there with a grudge against all of them. Plum, Sofia, and Marlowe must uncover the identity of the killer and save themselves before it's too late.