Episode 1
It is the start of the summer holidays for Quinquin and it is also the start of a local killing spree after a woman is found chopped up and fed to a cow, who is found dead in an old bunker.
Episode 2
Van der Weyden and Carpentier discover that the two victims were lovers. Meanwhile, Quinquin and his friends follow the case with an investigation of their own.
Episode 3
The forensic vet warns Var der Weyden that the cows were suffering from mad cow disease. Meanwhile, Quinquin inadvertently makes a discovery that solves part of the mystery.
Episode 4
Mohamed becomes insane after being humiliated by Ève's sister. Meanwhile, Var der Weyden and Carpentier face new and atrocious murderers as they get closer to solving the case.
