Rwanda, 1973. Young girls are sent to Our Lady of the Nile, a prestigious Catholic boarding school perched on a hill, where they are taught to become the Rwandan elite. With graduation on the horizon, they share the same dormitory, the same dreams and the same teenage concerns. But throughout the land as well as within the school, deep-seated antagonism is rumbling, about to change these young girls’ lives – and the entire country – forever.