Everything must go when the farmer sets up a stall by the side of the road and leaves Bitzer in charge. The lazy sheepdog soon tires of his role and gives Shaun the job. He proves to be a much better salesman than Bitzer and the flock are only too happy to get stuck in, selling pretty much all the farmer's worldly possessions.
The farmer throws a fancy-dress house party for his birthday. When Bitzer loses all the invitations, however, Shaun saves the day again. Disguised in their own ingenious costumes, the sheep stand in as the guests and have a good old knees-up. But can they fool the farmer into believing he is surrounded by his friends?
Two evil bungling alien scientists transport Pidsley the cat and Shaun aboard their flying saucer. Unfortunately, a foolish error causes the aliens to swap the animals' brains around. Shaun and Pidsley are dumped back to Earth, not realizing they are in the wrong bodies - leading to much confusion around the farm before the aliens return to correct their mistake.At the end, everyone's brains were also swapped.
Shaun is smitten when a bedraggled new sheep lands among the flock. After a wash in the sheep dip, the newcomer turns out to be quite attractive and Shaun immediately falls head over hoof for her. While Bitzer goes on a journey to find her rightful owner, the flock are kept amused by Shaun's romantic antics.
Bitzer's kennel is accidentally destroyed by the farmer's tractor crashing into it and the canny canine hopes the farmer will replace it with a new deluxe model. But when he sees his master's clumsy attempt to build a new kennel, Bitzer is so horrified that he packs his bags and leaves home. Shaun, however, hopes to tempt Bitzer to return with the kennel of his dreams. At the first scene, the flock are having a party at the chicken coop.
When Bitzer injures his foot and can't work, the Farmer chooses the pigs to take over his role. The power crazy pigs take the opportunity to turn the farm into a porky paradise - at the sheep's expense. Bitzer tries in vain to warn his master what is going on behind his back, but it's Shaun who steps in and restores the status quo ante.
After getting covered in soot, two hapless ducks are mistaken for a pair of rare African Zebra Ducks. Seeing a way to make money, the farmer transforms Shaun's field into an exotic duck enclosure, which he gleefully opens to the public. Shaun doesn't appreciate losing his field and sets about exposing the fraud.
The Farmer's niece has come to visit, bringing her precious pet rabbit. The Farmer entrusts Bitzer to look after it while they go inside for lunch. All in a day's work - until the rabbit disappears! Shaun and the flock are called to action to help track down the illusive pet before the niece discovers it's missing. But do they understand what they're looking for?