Dramas de hermanas (Diario de Nikki, 16)

With the new school year about to start, Nikki is a little worried. But, as always, her BFFs are there to help her. Only this time, it's her friends who need her help. Nikki gets overwhelmed right away, and even starts feeling unwell… an opportunity her little sister Brianna seizes to steal her diary! What kind of trouble will Brianna cause while Nikki is out of commission?