Four women who used to be classmates, reunite years after for a Baby Shower party, in which several murders will unfold.
Chile, 1970. During a night of heavy drinking, Jaime, a lonely 20-year-old young man, is sentenced to prison. There, he meets “The Stallion”, an older and respected man in whom he finds protection, and from whom he learns about love and loyalty. But as their relationship grows stronger, “The Stallion” faces the violent power struggles within the prison.
Inspired by real events, "Bestia" enters the life of a secret police agent in the military dictatorship in Chile. The relationship with her dog, her body, her fears and frustrations, reveal a macabre fracture in her mind and a country.
