Thevalli Namboodiri, Charu Haasan, is a renowned astrologer who spends his days reading the stars to guide his village through a string of misfortunes. When his investigations reveal that the village’s troubles stem from black magic and tantric practices, all linked to his old rival Mekkadan Namboodiri, the danger feels personal and immediate. On the villagers’ urging, he decides to confront the menace head-on, aware that fragile peace in the hills could crumble if he falters.
At the gathering, Mekkadan scoffs at Thevalli’s warnings and makes a chilling proclamation about his illicit son: Malu, Jayabharathi, born of a low-caste woman, who will become his disciple and master these dark arts. This revelation throws a sharp new light on the feud, amplifying Thevalli’s concern for both his family and the village. The tension deepens as Thevalli moves to protect his people while wrestling with a personal sense of responsibility for a lineage tainted by forbidden power.
During the Upanayanam of his own son, Thevalli notices the illicit son standing among the crowd, a sobering reminder of the perilous path ahead. To prevent catastrophe and elevate both sons, he seeks the counsel of his mentor, the wise Thirumeni, Jose Prakash, and decides to teach them the three Vedas, hoping knowledge might temper the propensity for destruction. This bold plan echoes the old belief that wisdom can subdue even the darkest arts, but it also sets in motion a dangerous competition between two brothers who now stand on opposite sides of a sacred and perilous bargain.
Anantha Padmanabhan, Thevalli’s illicit son, Mammootty, rises as a master of the Vedas and the austere discipline of tantric painting. His intellect and prowess win him admiration, but his heart is torn by love for the daughter of Putthedan Namboodiri, an aristocratic Brahmin. Putthedan, P C George, harshly rejects Anantha, feeding a cycle of resentment and rage. The tension between lineage, caste, and ambition drives a widening rift that pulls the brothers into a dangerous collision of power and revenge.
After a fierce turn of events, Anantha chooses to flee and is later drawn into Mekkadan’s orbit, accepting his offer to become a disciple and deepen his studies in a remote, secluded location. When Mekkadan dies, Anantha’s study continues, but the village begins to suffer severe calamities as his power grows. To maintain control, Anantha wields his abilities over the tribal communities around his home, bending them to his will. Ponni, the daughter of the tribal chief, Silk Smitha offers herself to him, and he accepts without breaking his vow of celibacy, using her for advanced Abhichara Karma rather than genuine affection.
Thevalli’s younger son, Vishnu, K. B. Ganesh Kumar, steps into the breach. He travels with friends into the forests to reach Anantha’s lair, hoping to dissuade him and restore balance. The forest natives refuse to aid them, yet Vishnu remains determined. Anantha emerges to confront his brother directly, warning him not to interfere as the tragedy deepens. The friends of Vishnu clash with Anantha’s followers, and the protective magic around the house is tested when one ally breaches the warding circle, paying with his life as a violent force of nature erupts and wreaks havoc.
In a bid to shield Usha, Vishnu places her inside a magical circle for protection. Usha then unintentionally triggers the awakened destructive powers by placing a circle inside a tantric kalam, unleashing the entities long enslaved by Anantha. The attack answers back with brutal fury, and the mansion becomes a battleground as the beings seek revenge. As danger closes in, Ponni’s tragic fate unfolds when a river crossing turns fatal and the boat overturns, taking her life in the chaos.
With more of Anantha’s world collapsing around him, another of Vishnu’s friends is killed by tribal forces, and Anantha returns to his mansion to confront the onslaught of vengeful powers. The household trembles, and the entities strain to claim their due. Realizing the depth of the damage he has caused, Anantha summons Vishnu and directs him to seek the blessing of the Devi Idol in the basement, hoping to anchor the forces that he unleashed. In a dramatic act, Anantha gathers the fractured powers and leads them away to a distant place, recognizing the grievous error in using nature’s power to destroy rather than to redeem.
Lightning descends and consumes Anantha, ending his reign of fear as the mansion and its cursed energies crumble. The entities dissipate in a final, cataclysmic release, and Vishnu and Usha seeking shelter at the Goddess’s feet are spared the worst of the destruction. The village survives the storm’s wrath, but not without cost, as the events leave a lasting mark on every life involved and remind everyone of the thin line between mastery and ruin.
