A 21-year old boy named Sunny (Vishal Jethwa), comes to the city on a murder contract. But he also has a penchant for sexually assaulting and murdering young girls. When he locks horns with Shivani Shivaji Roy (Rani Mukerji), the newly appointed Chief of the city police, a thrilling cat and mouse hunt begins. Will Shivani manage to nab Sunny, or does she end up being one of his many victims?