Hurray! Amazing news! Violet's friend and faithful colleague in detective work, Policeman Green, is getting married! He and his fiancee invited Violet, Rose and Artie to beautiful Tiger Island. Palm trees, sea, sun - what could be better?! But how surprised the guys were when they met their ancient enemies in this corner of paradise: the Du Plicitou family! Young detectives have already caught them stealing! And it had to happen that their neighbor at the hotel, a respectable old lady, lost a valuable figurine. Are Du Plicit really going back to their old ways? The guys decide to bring them to clean water! But what if this time the criminal turns out to be much more cunning?