The Kowalski family is making preparations for the New Year’s Eve party. In the meantime, TV news announces that the New Year has been lost, which results in a great commotion all over the globe. The party is cancelled, but soon it appears that the New Year got lost not very far away from the Kowalskis’ house. So the Kowalski three children decide to find the lost baby: along with their dog they form the sting brigade, a group specializing in unusual cases. Their grandpa, who is an inventor, makes various contraptions in order to help them to find the New Year.