In the peaceful and tranquil farm, the little sheep Shaun and his friends are using their imaginations to play various games that challenge the limits of life. This irritates the sheepdog, who has to issue bans one after another to prevent the sheep from making trouble. How can Sean be manipulated? He came up with a trick and ordered a pizza by phone, but he attracted an unexpected guest. The visitor is an alien baby named Lula. Although they don't speak the same language, Sean finally figured out through body language that Lula wanted to find a spaceship to return to her hometown. After careful planning, Sean finally embarked on a journey to find the spaceship with this new friend. At the same time, the visit of the UFO caused a sensation in the town, and also alarmed a government agency that specializes in searching for alien creatures. The tortuous journey to find the spaceship has now been joined by a fierce opponent. Sean and his friends will face unprecedented tests...