Ek Villain is an action romantic drama and a remake of the Korean film I Saw the Devil. The movie revolves around Guru Divekar (Sidharth Malhotra), a ruthless gangster. Guru’s life changes when he falls in love with Aisha Verma (Shraddha Kapoor), an optimistic girl, and decides to mend his ways. However, their happy life is destroyed when a serial killer murders Aisha. Guru vows to take revenge for Aisha’s death. He begins to search for the culprit to punish brutally. What happens next, will Guru succeed in nabbing Aisha’s killer, and who is behind all this, is revealed in the climax of this intriguing drama.