Today Ava the Postie has a special delivery for Builder Nate - it's an invitation to the Biggleton Art Show from Khadija the Artist. Khadija is out in the park finishing her latest masterpiece. When the painting is finished, she looks for the perfect place to hang it, but nowhere is right. She makes a phone call to Builder Nate and asks him to build a wall for her, but the wall keeps getting in the way of all the busy people in Biggleton. Show less