In 2004 while studying filmmaking at the SCAC in Cataluña, Diana had to come up with a final course project. About what, she asked herself? About periods, she decided, because femininity for her has never been evident but always a source of serious problems. She then met Jerónimo Molero, a well-known director of photography in Spain. Together, they decided to go deeper into what was originally a college project and turn it into a creative documentary. The result is a four-year immersion into the heart of this taboo. A tireless traveller, Diana crossed all the continents in search of the opinions and advice of experts and therapists, but also those of men and women all over the world.