Thomas Chacko, or "Aadu Thoma" as he is widely known, is a local goon and a quarry owner, who is notorious for being the undefeated champion in his confrontations. He is the son of retired school headmaster Chacko (Chacko master), the President's medal winner in mathematics. Thoma is a blemish for respectable Chacko's reputation, and both never get along on any occasion. His mother and sister are left to choose between sides; while Chacko master's brother – Manimala Vakkachan, supports Thoma.