In the heart of Tamil Nadu, a brother's love for his sister takes a taboo turn. Bava, a strong-willed laborer, finds himself irresistibly drawn to his younger sister, Maranaadi. As they work side by side, their glances linger longer, and innocent touches ignite sparks. One day, as Maranaadi bathes, Bava catches a glimpse of her naked form, setting his desires ablaze. Their secret encounters begin, filled with passionate kisses and forbidden caresses, until their love can no longer be contained.