A poignant social commentary about the corrosive impact of political corruption on societal equilibrium, 'Theri' tells the story of Vijay Kumar, a honest policeman whose family is brutally murdered by a opportunistic politician and his henchmen. Devastated, Vijay decides to start a new life, devoted to raising his young daughter and nurturing her in a loving and peaceful environment. However, unforeseen events jeopardize his anonymity, forcing him to take extreme measures to protect his daughter and uphold the ideals of justice and revenge.