Urvasi (Anjali Devi), is the young mistress of a king (Serukalathur Sama). With the help of her own lover (S. A. Natarajan), she pushes the king off a boat and usurps his powers. Urvasi appoints herself as the new queen regnant, and the kingdom experiences a reign of terror. The palace where the two princes of the kingdom live is burnt. The queen assumes all powers and kills all potential opponents, including her lover. A sage comes to the kingdom with his son and a girl, and joins the queen as her adviser. Years roll by. The sage's son Veerangan (S. V. Sahasranamam) is appointed Army Commander. At the same time, in the countryside, Karikalan (M. G. Ramachandran) functions as de facto leader of the people, helps them in various ways and fights the queen's misrule. When he becomes a big threat to the queen, she orders his capture. Veerangan sends Kala (Madhuri Devi), the girl raised by the sage as a spy, to Karikalan, but she falls in love with him.