Darkness falls upon a 200-year old traditional household Durga Pujo when the priest is murdered. Will the unwelcome guest in the house change everything?

Parboni arrives At the Boikuntho house during Durga Pujo to return something valuable. Will the memories of the past come back to life because of her presence?

Even as Parboni meets her old friend Choton, she is constantly disturbed by her past. But, what family heirloom does she return?

The police come to the Boikuntho house to investigate the priest's murder. Meanwhile, what memories of Parboni's past return to the mentally unwell Choton?

Tragedy befalls Boikuntho house on Ashtami morning, as another dead body is discovered. Is Parboni the reason behind the two deaths?

Almost everyone in the Choudhury household accuses Parboni of Choton's murder. An ear-splitting howl from one of the Choudhurys pierces the silence of the house in mourning.

With Tublu dead, Monojit Halder starts interrogating the family again. As Tublu's wife reveals a name that he had uttered in his last moment, another missing piece of the puzzle comes to the fore.

As Halder questions everyone about the identical keys found in the stomachs of the deceased, Parboni suddenly faints. Bulu's husband reveals a dark secret of the family. Who's turn is it now to pay for the sins of the family?

As the family mourns another death, Halder stuns them all by revealing the identity of the killer. Baikuntho turns pale on hearing Parboni recollect her past. Someone notices Parboni behaving mysteriously late at night.

Parboni recounts her past to an unexpected friend. On the night of the bisarjan, things come a full circle as all the sinners are made to pay for their past misdeeds.