In the 13th episode of Naagin 3, Anu (Heli Daruwala) goes to a police officer and narrates how an ichchadhaari Naagin (Bela) is taking revenge on their family as they had killed one of them sometime back. She tells him how Karan, Adi, Yuvi, Rehaan- all are missing and she has a feeling that they all have been killed. She further claims that Bela (Surbhi Jyoti) is the Naagin and goes on to discuss her plan to expose her.
The officer obviously finds it hard to believe but agrees to follow her plan. Meanwhile, Bela hears Adi's (Puneett Chouksey) screams and reaches Jamini's (Mahira Sharma) room. She asks her if everything is fine. Jamini tells Bela that she is missing Rehaan and is watching his video.
Jamini further leaves Bela puzzled as she extends a hand of friendship towards her and says the two are alike in a lot of ways. In reality, Adi, who has shrunk to thumb size due to Jamini's powers, is trapped in a box.
Later, Jamini reveals that she plans to sacrifice Bela, as in her world if one sacrifices a Nagrani, one becomes the queen of hell. Subsequently, Vish (Anita Hassanandani) comes to Bela's room and tells her that Anu knows her secret as she has seen the pictures.
Bela tells her that she knows that Anu has told everyone about it, but nobody has believed her. She also tells Vish that she's surprised about Jamini extending a hand of friendship to her and that there is something suspicious about her. Vish agrees and says that she should be careful of her.
In the middle of their conversation, Maahir enters the room. Bela immediately (pretends to) slips on Maahir, and Vish quickly slithers outside the room in her snake form. Meanwhile, Anu calls Kuhu (Simran Sachdeva) and asks for help. She commands her to ask everyone to gather in the haveli as she wants to prove that she's right about Bela.
In exchange, she promises Kuhu to tell her husband's secret. Kuhu agrees to the deal and tells everyone that the villagers have organised a muh dikhai ceremony for Bela and they all have to reach the haveli.
Anu makes all the arrangements while the police officer looks on, still doubtful of her plan and her theory of a Naagin avenging. After reaching the haveli, Sumitra (Rakshanda Khan) thanks village folks for inviting them for the ceremony, but she is surprised to know that they themselves have been invited to the haveli by somebody else.
Vish comes to Bela's house and finds that nobody is there. She soon discovers their plans of muh dikhai ceremony in haveli. While Anu and police officer are waiting for the right opportunity, the villagers ask the newlyweds Pratham-Suhani and Maahir-Bela, about the annoying habits of each other.
Pratham (Mithil Jainand) says that Suhaani (Charvi Saraf) cries while watching romantic movies, while Suhaani says that her husband doesn't drink tea. On the other hand, Maahir (Pearl V Puri) says that Bela has OCD and snores while sleeping. Bela says that Maahir is glued to his Bluetooth and is present in the bedroom for only three hours.
Just when the police officer says that he can't wait, a gang of saperas (snake charmers) walk in with their beens (trumpets). Vish too reaches the venue and quickly drags Bela to a secluded corner and informs her about the impending trouble.
The charmers start playing the beens. Since Bela's father (Guruji) is also present, he quickly comes and tells Bela that he will chant some mantras to increase her power so that she can endure the music of the instrument.
Guruji steps out on the pretext of taking a call and starts the mantra jaap. Bela is slowly losing control over herself and is struggling to control herself from turning into Naagin.
Will Anu's plan be successful? Stay tuned to know.