Carlota is astonished when a basketball player from the opposing team comes onto the field in long trousers, and even more surprised when she learns that she is doing it because of cultural and religious obligation. Her enterprising and always curious disposition lead her to start writing a diary about immigration and human rights. With the aid of her classmates, she begins describing examples of everyday life in order to give a global, realistic and very sound vision of the situation of immigrant people. And, at the same time, she will review how her country has developed from a social and cultural point of view.