Movie Story : Kathiravan secretly raises three orphans, Sathya, Surya, and Shiva, as his own sons and trains them to unknowingly serve his illegal mushroom drug empire. The brothers stay devoted to him even though they are used as pawns. After Kathiravan kills his former boss and takes over the business, the boss's widow, Radha, vows revenge, while Varsha, Sathya's love interest, plans to hand her estate to its workers, prompting Kathiravan to turn them against her. The stakes rise until Sathya and Radha confront Kathiravan in a climactic showdown.