The Sheep Detectives

In the English village of Denbrook, shepherd George Hardy spends his time reading murder mystery novels to his flock of sheep. The sheep live in blissful ignorance, believing that death is only a concept that exists in fiction and that they turn into clouds at the end of their lives. When faced with an uncomfortable situation, they can will themselves to forget. They also discriminate against a lamb born in winter rather than the typical spring, who George takes special care of.

One morning, George is discovered dead outside his trailer. Reporter Elliot Matthews believes it to be a murder, and encourages Tim Derry, the town's only police officer, to investigate. Tim concludes George was poisoned by one of the townspeople. Devastated by George's death, the sheep decide to solve the mystery on their own, led by crime aficionado ewe Lily, the ram Mopple who always keeps his memories, and loner Sebastian who George rescued from a carnival.

During the reading of George's will, they learn that he had a twin son and daughter who were sent away for adoption after their mother died in childbirth. The daughter, Rebecca Hampstead, reconnected with George and had just arrived from the United States to visit him for the first time. Also in attendance are Elliot, Tim, George's attorney Lydia Harbottle, Reverend Hillcoate, butcher Ham Gilyard, innkeeper Beth Pennock, and neighboring shepherd Caleb Merrow.

Lydia ousts Elliot before calling George's son, Peter Van Vuren, who lives in South Africa, so he can attend remotely. They learn George was secretly a millionaire after selling the patent for an orf medicine he invented. The new will awards his fortune to Rebecca, replacing an old will which donated $30 million to the Society for the Prevention of Cruelty to Animals.

Cloud, a member of the flock, reveals she found one of Rebecca's bangles the night of the murder, contradicting Rebecca's claim of never having met her father. The sheep lead Tim to the meadow where he finds the bangle. He then discovers the type of berry used to poison George squashed in the soles of Rebecca's boots, and she is placed under arrest.

Lily and Mopple, soon to be taken in by Caleb, visit his meadow to meet their future flock mates, but discover that Caleb has been collaborating with Ham to slaughter sheep for meat. They are chased by Caleb's German Shepherds, but Sebastian saves them, sacrificing his own life in the process. Lily realizes that death is real, and that she willed herself to forget every time a sheep close to her died.

Lily tries to lead the other sheep to safety, but they become terrified and will themselves to forget, much to Lily's dismay. Mopple encourages her to embrace her memories of their deceased loved ones. Despondent, Lily tries to forget George, but speaks to his ghost and realizes that Rebecca is innocent and has been framed by the real killer. She and Mopple recruit the winter lamb to sneak inside the jail and paint a message with his hooves.

Tim transfers Rebecca for prosecution, but suddenly realizes that she is innocent. With help from the sheep, he recalls several clues leading him to realize that "Elliot" is actually Peter, who was Rebecca's brother, and George's son and real-murderer, who murdered George by the poison drink, and forged a will to make it appear as though Rebecca had a motive for the crime, framing her so he would inherit his father's fortune as his next-of-kin when she was convicted. Peter attempts to flee, but his getaway is foiled by twin rams Ronnie and Reggie, who smash and disable his car. Peter is arrested while Rebecca is released.

Rebecca learns from Beth that her and Peter's mother was named Lily. Rebecca takes her father's surname, claims ownership of the meadow and sheep, and buys Caleb's sheep, saving them from being slaughtered. As Rebecca sits down to read to the flock, Lily adopts the winter lamb and names him George and welcomes him into the flock. She looks towards the sunset and sees a cloud resembling Sebastian.