In the ancient village of Shivapuram, little Ananthan, Prithviraj Sukumaran hears a tale from his mother, Gayathri, about a lineage of powerful magicians called Madambi Tharavadu who guard the nagamanikyam, a jewel perched on a serpent’s head. The story says this precious gem lies hidden inside the family home, fiercely protected by snakes, including a tiny one named Kunjootan. Shivapuram and its legends are painted with a quiet reverence, laying the groundwork for a struggle that blends duty, myth, and danger.
Years later, under the weight of his mother’s memory, Ananthan returns from America to light the lamps at Shivakavu, a shadowy temple dedicated to Shiva. On his journey home he encounters Maravi Mathai, Cochin Haneefa on the train, a moment that tugs him deeper into the village’s tangled history. The looming conflict is sparked by the dreaded wizard Digambaran, Manoj K Jayan, who resists the lamp-lighting on grounds he brands superstition. His true motive, however, is to seize the nagamanikyam and to avenge a centuries-old rift with the Madambi Tharavadu over the killing of Siddhayogigal. Ananthan is a skeptic at first, but the supernatural begins to press in, challenging his beliefs and testing his courage.
As Ananthan tries to blend into the local life, he gradually wins the villagers over with his warm and unassuming nature. Yet the peace is fragile, because Digambaran can seize control of a person’s will for short bursts, turning Ananthan’s world tense and uncertain. In the shadows, Ananthan’s cousin Bhadra falls in love with him, a development that pulls him toward a future he must negotiate carefully. Her devotion is tested by a fateful choice: the possibility of becoming a Devi in a mystical ritual that demands self-offering, a path that could redefine her entire life and their bond.
Digambaran’s former ally, Chemban, a blind martial artist, stands in the way of the sorcerer’s hunt for the nagamanikyam. The confrontation grows darker as Bhama, Chemban’s sister, is enticed into a perilous scheme to revive Digambaran’s own lover, Subhadra. A sequence of sensuous and perilous rites unfolds, weaving Kathakali movements with tantric paraphernalia and ancient magic, transforming the village into a stage for mystic power and danger.
Tragedy strikes when Digambaran kills Bhama, leaving a trail of grief and anger in his wake. Ananthan and Bhadra manage to escape after Ananthan wounds the sorcerer with a simple stone, signaling a shift in the balance of power. Chemban arrives to confront Digambaran head-on, and in a climactic sword duel, he severs Digambaran’s right toe—this toe houses the ring that contains the sorcerer’s magic—before gouging out Digambaran’s eyes and trapping him inside a cave. Bereft of his powers, Digambaran wails in defeat as the trio departs to restore peace.
With the nagamanikyam restored, Ananthan and Bhadra are finally reunited, their bond weathered but enduring. The film closes on a stark image: a once-mighty Digambaran, blinded and powerless, crying out near the cave, a reminder of the price of unchecked magic and vengeance. In the quiet aftermath, the village returns to a fragile calm, held together by memory, courage, and the enduring magic of the Nagamanikyam.