Sona Mukherjee is a devoted housewife living in a picturesque colonial bungalow in Nainital, deeply in love with her charming husband, Dr. Mrityunjoy Mukherjee, a respected gynecologist. Their idyllic existence shatters when Mrityunjoy is arrested and accused of being a notorious serial killer who abducts and murders unmarried, pregnant women. The local police, led by Inspector Ajay Singh—Sona’s former lover—build a seemingly airtight case, presenting
forensic evidence and eyewitness testimonies that paint the doctor as a ruthless monster.Refusing to believe that the man she loves is capable of such atrocities, Sona becomes consumed by a desperate obsession to prove his innocence. Convinced that the only way to save Mrityunjoy is to recreate the exact modus operandi of the actual killer, thus proving another perpetrator is still at large, Sona undergoes a chilling psychological
transformation. Her motivation shifts from mere marital devotion to a twisted, calculating crusade.She targets Anushka, a pregnant young woman and the star witness against Mrityunjoy. Sona abducts Anushka and holds her captive in a hidden, secure basement beneath their home. To further her plot, Sona enlists the help of Zoya, a corrupt lawyer and a former patient who harbors her own dark agenda. As Sona meticulously stages the crime scene to mirror the previous murders, she finds herself sinking deeper into moral depravity. She struggles with her conscience while committing acts of cruelty, convincing herself that these extreme measures are necessary sacrifices for her husband’s freedom.Meanwhile, Inspector Ajay grows increasingly suspicious of Sona’s erratic behavior and her obsessive defense of her husband. Ajay relentlessly investigates the disappearance of Anushka, closing in on the Mukherjee household as tension mounts.The climax reveals a shocking web of deceit. It turns out that Mrityunjoy is not the victim he pretended to be, but the true mastermind who manipulated Sona’s unwavering love to orchestrate his own cover-up and eliminate loose ends. Sona discovers the horrific truth: Mrityunjoy actually despised his victims and used his medical practice to prey on them, viewing Sona merely as a pawn in his psychopath game.Sion’s profound betrayal sparks a sudden, violent realization. In the final confrontation, rather than protecting him, Sona turns the tables on her husband. She saves Anushka and allows the authorities to arrest Mrityunjoy, ensuring he faces justice. Ultimately, Sona is left isolated, broken by the revelation that her entire marriage was built on a foundation of lies, having committed unforgivable sins to protect a monster who never loved her in return.