Nava Mohini is a horror movie where Raja (Narasimha Raju) and Radha (Rohini) fall in love with each other. But Raja's father Dharmayya, a rich landlord kills Radha as he is against this relationship. The twist in the tale occurs when Radha returns as a ghost and starts troubling their family.

Naagulu (Chiranjeevi) is forced to consume poison since childhood by his father making him immune to the snake bit. Every full moon day, he kills women and on one such day, he kills the woman he loves. Her brother Raju (Narasimharaju) gets suspicious and starts his investigation only to make a shocking discovery. Punnami Naagu is a remake of the Kannada film Hunnimeya Rathriyalli.

The fate of an innocent and unfortunate man takes a different course after he gains magical powers. Raju (Narsimha Raju) is a good-hearted man who is often cheated by his fellow villagers. When a local moneylender cheats him, all he is left with are some manuscripts written by his grandfather. However, the manuscripts lead him to a magical amulet, which helps him in attaining wealth and intelligence. Jealous of his wealth, the villagers plot to steal the magical amulet.

Jaganmohini (Jayamalini) commits suicide and becomes a ghost after getting betrayed by a king on the pretext of marriage. Later, the king is reborn as Raja (Narasimha Raju) and is married to a pious woman Gowri (Prabha). Mohini, now a ghost, plans to take away Raja from this world permanently. Can Gowri fight against the magical spells of Mohini and get her husband back?