MRS. SERIAL KILLER tells the story of Shona (Jacqueline Fernandez), who's married to Joy, a prominent doctor (Manoj Bajpayee). When Joy is arrested for being a suspected serial killer, Shona's sure he's being set up and determines to do whatever it takes to get her husband out of jail. Her efforts are hindered, though, by her ex-boyfriend Imran (Mohit Raina), who's the cop who arrested Joy in the first place