Dudu, a loyal dog and faithful friend to humans, feeds the chickens and rabbits, collects eggs to sell, uses the money earned to carry a bamboo basket to the fruit stall, and politely signals that it wants to buy apples. The vendor understands its wish, packs the apples, and hands them over. On the way back, it sees a young woman being robbed; Dudu carefully sets down the basket, bravely chases the culprit, drives the robber up a tree, retrieves the handbag, and returns it to the lady. Back home, Dudu places the apples on the table, then goes to the kitchen to turn off the electric cooker with instant noodles that have finished cooking; it places a towel underneath, lifts the pot, carefully prepares the meal, and carries the lunch box in its mouth to deliver food to its master working in the fields. On the way home, it accidentally falls into a sewer, leading to a series of thrilling adventures.