Mrs Undercover is an action thriller drama about an undercover agent named Durga (Radhika Apte) who is living in disguise as a middle-class housewife along with her husband and son. Durga is assigned a mission after 10 years to nab a serial killer who makes young women his target. Initially Durga refuses to take up the mission due to her commitment towards her family but then gets down to accepting it. How does she take down a serial killer targeting ambitious women with her rusty skills forms the remaining part of this edge-of-the-seat thriller.