Amid incessant rains pounding down on Mumbai, Senior Inspector Arnav Singh Rajput is called to a shocking crime scene. A male body is found dismembered on the steps of a Kaali temple. Drawn into his flesh are symbols of a tantra cult. The desecration of a body at a Hindu place of worship puts the city on edge and divides Arnav's priorities: stopping a fanatic from killing again and caring for his wife who's struggling through a challenging pregnancy.

Then video footage of the murder is uploaded onto the account of a Bollywood social media influencer, triggering twists in the investigation Arnav didn't see coming. Caste systems at war. A priest under suspicion. And an anonymous threat that puts his wife's welfare at risk. When more bodies are found, the savagery of the city begins to surface--and Arnav fears that no one is safe from a bigger storm brewing.