Bob, Wendy and the Machines are building a tennis court. The court has been dug out and rolled flat ready for its special asphalt surface. Wendy, Roley and Dizzy head off to finish it while Bob stays at the yard to build the umpire's seat and scoreboard. Dizzy is in heaven mixing the lovely green asphalt - she pours it on to the court and Roley rolls it flat. They do a lovely job and head back to the yard with Wendy to pick up the fencing. Meanwhile, Travis and Spud arrive at the court with the tennis net. Spud, as usual thinking of his stomach, decides if he helps Wendy by unloading the net, she will give him something to eat. Unfortunately, the net is too heavy for Spud to handle by himself and he falls slap-bang onto the gooey green asphalt. He tries to cover up the mess with grass but the surface now looks lumpy so he persuades Travis to 'do a Roley' and smooth it with his tyres. Just as Travis is in the midst of 'smoothing' the asphalt Wendy and Scoop arrive. They can't believe their eyes - the court is ruined. Wendy takes charge - she calls Bob on the mobile and asks him to send Dizzy and Roley over. By the time Bob arrives with the umpire's seat, Wendy and team have relaid the asphalt. There's even time for a quick match between Wendy and Bob, with Spud as an extremely reluctant ballboy.