When a kidnapping forces politician Barun Roy to take action against Bagha, a dangerous don, he hires the best man for the job — Officer Saptarshi Sinha.

Steely cop Arjun Maitra takes over Bagha's case. Opposition leader Nibedita Basak demands justice for Saptarshi's fate. Barun has an offer for Sagor.

As Nibedita visits a figure from her past, Arjun receives unsettling intel from a mysterious informant. The authorities want Arjun out of their way.

A grief-stricken Sagor goes on a brutal rampage. Arjun is reinstated as the head of the SIT to put an end to Sagor's crimes.

Sagor's incriminating “insurance” video is brought into play. Ranjit goes to meet Sagor. Arjun learns the shocking identity of the mole within the SIT.

Arjun learns more about the mole within his force. As Ranjit devises an escape plan with an unexpected ally, will Arjun be able to stop him?