Where Is Vidya Balan

Where is Vidya Balan is a 2015 Telugu crime comedy entertainer film.
Plot.
Kiran (Prince) is a simple pizza delivery boy who falls in love with a doctor named Swathi (Jyothi Setti). He starts wooing her and some how succeeds in winning her love.
While all this is going on, the couple suddenly get stuck in a chaotic situation where a deadly minister (Jaya Prakash Reddy), a reputed doctor (Rao Ramesh) and a funny don (Sampoornesh Babu) are after Vidya Balan.
Who is this Vidya Balan ? Why are everyone after her ? and what is this chaotic situation all about ? 
References.
 