This was fun to watch, for the most part. The ending was a bit abrupt and lame but part of that was because what preceded it was so strong that only a great ending would suffice.
The story is premise is not a new one: I used to see this sort of thing in old Tom & Jerry, Sylvester and other cartoons in which a pet owner would invent a robot to do the work of our animated hero, only 10 times better. In the end, the robot would always have a disaster strike it (usuallly by the jealous cat) and our animal-hero would keep his job.
Will that happen to "Shaun" ( the Sheep)? Hopefully, because the farmer has purchased a robot dog who certainly can control the sheep a lot better than Shaun.
What to do? Well, tune in and find out. It's a fun ride, as both Bitzer and the sheep try to figure out how to combat this robot-from-Hell.