Watch Online Free on Watchseries. A black-and-white children’s film follows class 6b during their autumn holidays. After a fun test drive with a new electric locomotive, they help Master Sellm build his house. They plan to build a paddling pool but struggle to find pipes. Discovering pipes in an old house, they also find stolen motorcycles. With help from the People’s Police and the godparent brigade, they lay the pipes and learn about foreign property and reporting stolen goods.