The Lottie Project follows the life of Charlie, a girl struggling to cope with her parents' recent separation. Charlie's world is further complicated by a grueling school history project that requires her to keep a diary written from the perspective of a Victorian child. Charlie invents a Victorian girl named Lottie and begins writing in Lottie's voice. The story cleverly alternates between Charlie's contemporary struggles—like dealing with her mother's new boyfriend—and the immersive, detailed diary entries of Lottie. The narrative is a profound exploration of escapism, finding solace in history, and the way imagination can help a child process real-world pain and uncertainty, ultimately helping Charlie face her own problems.