Like many other women, Diana has been suffering from problematic periods for years. With every new cycle, the same question arises: “Why the pain and annoyance if I am healthy?”. Her initial innocent curiosity sparks off an emotional voyage to the very roots of femininity and life. "Moon Inside You" is a fresh look at a taboo that defines the political and social reality of both women and men in a more profound way than society might be willing to admit. Facing the menstrual etiquette with doses of humour and self-irony, the documentary approaches the subject through both personal and collective references, thus challenging our preconceived idea of womanhood.