Ek Villain movie is based on the character Guru who is quiet, tough and ruthless boy, working for a politician, Prahlad. A dark past refuses to let Guru sleep at night until he meets a girl, Aisha. He falls in love with her, his life changes and he convinces Aisha to get married to him. Guru even quits his job and moves from Goa to Mumbai to make a new beginning with Aisha. Just when things seem perfect, she falls prey to an attack. When his lover becomes the latest victim of a serial killer, Guru blurs the line between good and evil in his pursuit of revenge.