A Happy Day for Percy

S1, E1: It's a muddy day on the site and Miss Jenny tells the machines to be careful. Byron the Bulldozer is disappointed when no one congratulates him for working carefully. Max and Monty are not taking care and break a water pipe causing Alfie to sink in to the mud. Byron comes to the rescue and everyone says "well done"! Byron is delighted, while Max and Monty are sent to back to the sheds...