In the 2004 teen film Mean Girls, Cady Heron moves from Africa to Illinois, where the high-school hierarchy is not unlike the food chain. “Being at Old Orchard Mall kind of reminded me of being home in Africa,” she thinks, “by the watering hole, when the animals are in heat.” Joselyn Bioh’s 2017 take on Mean Girls—the cliques, the flirting, the fighting—relocates it to an exclusive boarding school in Ghana, where the most popular student is thrown by a charismatic newcomer. An exploration of how universal “girl world” truly is. —C.J.F.