The Loner Girl in London is volume 4 of the series On Being, a self-referential, metaphysical case history where the author J. Guzmán psychoanalyzes her own consciousness throughout Time, uses tools like astrology to facilitate the investigation, and documents the entire process. On Being is a life-long, narrative, archival data set of her life in the form of diaries, whose purpose is to assist astrologers and other researchers in the detailed demonstration of how their respective theories, methods, techniques, and practices function in a real life. In volume 4, the protagonist Ana, who is the author J., travels to London to study abroad and travels solo around Europe for three months after she finishes school. Her experiences could be categorized archetypally into the energy of Neptune squaring her natal Mars, a transit lasting for the entirety of her travels. Her struggles involve persistent and intense anxiety and lethargy, a lack of appropriate boundaries regarding sex, a self-sabotaging overindulgence in alcohol and sugar, an emphasis on stream of consciousness poetry, and an overwhelming confusion and lack of clarity regarding her ambitions and the point of her life.