In her room 15 year old "Hannah" decides to start selling sex. She puts up an ad and offers her services as an escort. In her diary Hanna describes how she, over the course of an autumn sells sex in Stockholm. Hanna's first sex buyers ask no questions about her age, which is often enough to avoid being convicted of buying sex from children, claiming that it was thought that the girl was older. As the majority of sex buyers can get away with fines, police prioritize other crimes. The documentary "En eskortflickas dagbok" gives insight into a chaotic world.