Drama series for four- to six-year-olds about the parallel lives of parents at work and their children who stay with warm-hearted minder Granny Murray. Bobby is busy at work cleaning the buses when Chuck and Louie pop in and do a rendition of their Mop show for her. When Bobby returns to work she can't find her mop and it's a race against time to work out which bus it's on before it leaves the depot.