A vibrant cartoon with colours and smooth animation. Create a 3-minute original children's animated cartoon episode for a YouTube channel called Babylum. Title: "Where Is Didi?" Style: colorful, cheerful 3D children's animation, cute expressive characters, bright sunny environment, cinematic but simple and easy for young children to understand. Main characters: Babi - a kind and curious young boy wearing a blue hoodie. Bruno - a funny and friendly brown-and-white puppy. Bonnie - a cute little gray-and-white bunny. Didi - a cheerful yellow duckling. The story takes place in a beautiful sunny countryside with a lake, flowers, trees, mountains