Arun, a young man with an insatiable curiosity, stumbles upon a hidden cave during a community service outing. Drawn by an inexplicable pull, he ventures deep inside, where he discovers an ancient, ornately decorated pot. Inexplicably compelled, he breaks the pot, unleashing a swirling black smoke that invades his body and mind – the Spirit of Pain.
This malevolent entity, a parasitic being that feeds on suffering, begins to exert its insidious influence over Arun. Days later, while at home with his loving parents, the spirit takes control, forcing Arun into a horrifying act: he murders his parents, driven by the spirit's manipulative voice that promises to spare him only if he obeys.
Consumed by guilt and terror, Arun is arrested and sentenced to ten years in the brutal Jagraban Prison. Within the prison's harsh confines, Arun faces a relentless struggle for survival. He encounters violence, fear, and the crushing weight of loneliness. Yet, amidst the darkness, he finds glimmers of hope and connection.
He forms an unlikely bond with Karim, a hardened inmate who becomes a protector and confidante. Karim, bearing his own scars from a troubled past, recognizes the torment in Arun's eyes and takes him under his wing. Arun also finds solace in the compassionate presence of Neha, a prison nurse who offers kindness and a listening ear.
But the spirit's grip on Arun remains relentless. It manipulates him into conflicts with the prison's reigning bully, the Boss, and his cunning enforcer, Jackie. Arun finds himself caught in a power struggle, forced to make impossible choices that jeopardize his newfound friendships and his own safety.
A violent confrontation erupts between Arun, Karim, and the Boss, leaving Arun gravely injured and Karim facing an extended sentence for defending him. Arun is transferred to a maximum-security prison, a terrifying new environment filled with hardened criminals.
Meanwhile, Jackie, fueled by revenge for the Boss's death, captures Karim and Neha. He subjects Karim to brutal torture, intending to kill both him and Neha. However, a mysterious raven intervenes, aiding Karim in escaping and fighting back. This raven is revealed to be Gahvhal, the powerful being from the cave, who seems to have a connection to Arun and a vested interest in protecting his friends.
After ten grueling years, Arun emerges from prison, scarred and hardened by his experiences. But upon release, he is met by Karim and Neha, who have been patiently waiting for him. Their reunion is a testament to the enduring power of friendship and love, offering a glimmer of hope for a future free from the spirit's grasp.
However, the Spirit of Pain lingers, a malevolent shadow lurking in the depths of Arun's mind. It vows to return, to torment him once more should he ever find true happiness.
Arun's journey is far from over. He carries the scars of his past, both physical and emotional. He must learn to navigate a world outside prison walls, to confront his inner demons, and to find a way to break free from the spirit's curse. The anticipation, hinting at the challenges and triumphs that await Arun in the next chapter of his life.