Shaun, a mischievous sheep living with his flock at Mossy Bottom Farm, is bored with the routine of life on the farm. He concocts a plan to have a day off by tricking the farmer into going back to sleep by counting his sheep repeatedly. However, the caravan in which they put the farmer to bed accidentally rolls away, taking him into the city. Bitzer, the farmer’s dog, chases after him. The farmer receives a blow to the head and is taken to a hospital, where he is diagnosed with amnesia before leaving. He wanders into a hair salon and, acting on a vague recollection of shearing his sheep, cuts a celebrity’s hair. The celebrity loves the result and the farmer gains popularity as a hair stylist called “Mr. X”.Shaun the Sheep 2015
Meanwhile, the sheep find life impossible without the farmer, so Shaun sneaks onto a bus to the city; to his surprise, the rest of the flock follow him on another bus. They disguise themselves as people and begin looking for the farmer, but Shaun is captured by Trumper, an overzealous animal-control worker. Shaun is reunited with Bitzer in the animal lock-up, and with the help of a homeless dog named Slip, they manage to escape while imprisoning Trumper. They find the farmer, but he does not recognize them, much to their dismay.
Shaun, Bitzer, and the flock take refuge in a dark alleyway when they find evidence of the farmer’s memory loss, lifting their spirits. They devise a plan which involves putting the farmer to sleep again, returning him to the trailer on a pantomime horse (really the flock of sheep in an elaborate disguise), and hooking the trailer up to a bus returning to Mossy Bottom. The plan is initially successful, but they are pursued by Trumper (having escaped the lock-up), who is now intent on killing them outright.