Shivani Shivaji Roy (Rani Mukerji), a dedicated police officer of Mumbai Police, chases a Delhi-based kingpin, Karan Rastogi (Tahir Raj Bhasin), who runs an organised crime cartel involving child trafficking and drugs. She aims to arrest him and rescue Pyaari, a teenage orphan who is kidnapped by Rastogi's men. Shivani had saved Pyaari from her uncle, who wanted to sell her, and had since begun taking care of her like a daughter. Shivani takes the task personally, going beyond her legal rights and duties to nab Karan and save Pyaari. Karan, aware that Shivani is continually monitoring his cartel's activities, phones her, suggesting she not interrupt his business. Determined to catch him, Shivani uses intelligence inputs to track down his associate in Mumbai, who leads her to Karan's close aide, Wakeel, in Delhi. Karan, as a warning to Shivani, dismembers one of Pyaari's fingers and sends it to Shivani's house wrapped in a gift box, and gets Shivani's husband abused and thrashed.