Postman Pat - Series 7 - Postman Pat and the Greendale Knights

Children's animation. Pat babysits the children, who are all busy playing knights. Bill teases Lucy for being girly and not wanting to play knights properly. Pat builds the kids a castle out of old boxes. They play in it, leaving Lucy outside as castle guard. To Lucy's horror a strange knight arrives in a metal helmet, with a glowing sword in his hand.