Guarda su CineBlog01. 'When' discusses the filmmaker's experience with mental illness and how it has impacted her perception of the world around her. It mainly focuses on Anorexia Nervosa, Anxiety, and Depression. It aims to represent these ideas in an abstract but honest way - using CGI as a medium to create an impactful experience that will make the audience think about mental illness in a way they might not have before.