The robots have decided to build a racetrack on the field, and Skoop also wants to play. One, two, three, go! The robots have all sped off, but Skoop gets stuck and falls over! The hay needs collecting from the field, so Leo and his friends make a hay baler. It's a machine that collects hay and bundles it into big rolls. But how is the hay baler going to get around the field? They'll need a vehicle to pull it along.