The episode starts with an 11 year old story where a young child named Shubh is seen performing puja rituals along side his father and a person. His father, while returning in a boat with his son, drowns in the river and dies. The young child is emotionless and it is shown that the child presumably poisoned his father. The story moves on to the present, where a forensics expert, Nikhil Nair, is shown teaching at the FBI HQ. Later on he is shown doing some dillydally with his wife Naina, arguing about the reasons to leave his job with the CBI, something which he deeply regrets. Meanwhile, in India, a murderer kills a woman and her charred body is found by the police the next day, whose autopsy is performed by Dhananjay “DJ” Rajpoot, a senior forensic expert in the CBI. The modus operandi of the murder reveals that a serial killer is on a murder spree, in which DJ’s wife is also included.