Promoting the fact that everyone either has periods or knows someone who does, the book reduces the anxiety girls face in asking for help. It offers direct advice on what periods look and feel like and how to manage hygiene and pain. It also breaks up information using flaps and step-by-step photos of how to change pads and tampons, it discusses alternatives to tampons and pads, and gives information about possible sensory issues for people with autism.

Part 1: The basics -- Chapter 1: What are periods? -- Chapter 2: Period supplies -- Chapter 3: Common period worries -- Part 2: Photos and step-by-step guides -- Part 3: A bit more detail -- Chapter 4: What happens in the body during a menstrual cycle? -- Chapter 5: Autism-specific issues with periods.