A story of Shivani Shivaji Roy, Crime Branch, who sets out to confront the mastermind behind a child trafficking mafia. Senior Inspector Shivani Shivaji Roy is a strong dedicated officer of the Mumbai Police force. She works hard to uncover a Delhi-based child trafficking cartel. Shivani Shivaji Roy (Rani Mukerji), a dedicated and brave police officer with Mumbai Police, chases a Delhi-based kingpin, Karan Rastogi (Tahir Raj Bhasin), who runs an organised crime cartel involving child trafficking and drugs. Her aim is to hunt him down and rescue a teenage girl. India is the world’s hub for child sex trafficking – Nearly 40,000 children are abducted every year – Every 8 minutes a girl child goes missing in India. Mardaani, is a story of Shivani Shivaji Roy, Crime Branch, who sets out to confront the mastermind behind a child trafficking mafia. A police officer’s search for a missing teenage girl leads her to the depraved world of child trafficking. What follows is a cat-and-mouse game between the officer and a mafia kingpin.