Gadgetville lies close by the sea. It is a village where a competition on new gadgets takes place on the most important day of the year, Inventor’s Day. During the long and cold winter the best inventors of the village invent new gadgets to demonstrate them to the folks in the village on Inventor’s Day. One of Gadgetville’s residents is Lotte, a small but energetic little puppy girl, for whom the 24 hours in a day are clearly not enough. It is because she immediately has to learn to whistle by means of the tows of her feet, find the pirates’ treasure from the bottom of the sea, pull up a rope between two chimneys and learn to walk on it. And then it is necessary to play hopscotch, tracking and soccer with her best friends, the kitten Bruno and the bunny Albert.