Bob and team are building a barn for Farmer Pickles' sheep. Farmer Pickles brings the sheep down from the hills and puts them in a pen until the barn is finished. But one is missing, so he sends Scruffty off to look for it. Dizzy is impressed with Scruffty's herding skills and wishes she could be a sheepdog too. When Bob and Wendy go to JJ's for some more materials, she cannot contain herself and dashes off to help Scruffty. Bob and Wendy return, but are unable to continue working as they need Dizzy to mix cement for the uprights. Up in the hills, Dizzy joins Scruffty and they discover the lost sheep. Dizzy is amazed to find that it has given birth to a little lamb. Leaving Scruffty to look after them, she rushes back to fetch Farmer Pickles. Everyone is relieved to see her return and Farmer Pickles goes to rescue the mother and baby, while Dizzy rallies the troops to finish the barn. Dizzy feels justly proud when Farmer Pickles returns and the little lamb settles into his new home.