A young boy, Dickie, wants to invite the 'Sanitary Boy' to his birthday party. However, because of racial and class prejudices his four aunts won't allow him to do so. The eponymous actress next door, Miss Fleurice Marrete, devises a scheme to allow 'Sanitary Boy' to attend. All goes according to plan and 'Sanitary Boy' leaves the party content and clutching the best present of all: 'a shining mouth organ.'