After The Nanny 1 and The Nanny 2, which tell the touching story of the friendship between a little boy and Tchoutcha, his miraculous rag-tag nanny, comes the third animated musical film in the Nanny trilogy. The family grows with the arrival of a puppy. The little boy has a hard time with this situation of three: he is jealous of the many cuddles Tchoutcha gives this intruder! But fortunately, the nanny's magical power, and everyone's courage and goodwill, will succeed in reconciling everyone!