The movie starts with Tasha (Urvashi Rautela) confronting Aryan (Vivan Bhatena) about their intimate photo, which had been sent to her phone anonymously. Aryan’s girlfriend Rishma (Ihana Dhillon) appears with a gun to kill him. In a tussle, Rishma is shot and dies. Hate Story IV 2018
The story moves back, introducing Aryan and Rajveer (Karan Wahi), sons of London based billionaire and politician Vikram Khurana (Gulshan Grover). Looking for a fresh face to represent their company, Rajveer goes to a bar, where he is smitten by Tasha. He woos Tasha by promising her to make her a star and hires her for their company. In an attempt to lure her into bed, he pays some goons to attack her so he can swoop in as the hero. As he is paying the goons, someone takes a picture of the transaction. Aryan too is captivated by Tasha’s beauty and is able to get her drunk at a party. That night, he sleeps with her, and she wakes up regretting the event. This is when their photo is sent to her phone.
In the present, Aryan convinces Tasha to quietly dispose of Rishma’s body. They dump the body in a river. Tasha then reveals to the audience that she herself is the person behind all of this – the mastermind behind all the events thus far. She had known that Rajveer had hired goons and had bribed them as well; she also spiked Aryan’s drink at the party, and after he passed out, took photos with him in compromising positions to make it look like they slept together. She then sent the photos to Rishma.
Tasha continues to avoid Rajveer, making him desperate for her. Playing the brothers against each other, she publicly rejects Rajveer’s proposal, telling him that Aryan told her about how Rajveer lures girls into bed, then leaves them. She also reveals that she and Aryan are involved. Aryan receives a video clip of him dumping Rishma’s body. Vikram is baffled by Rajveer’s behaviour when he receives the compromising picture of Aryan and Tasha and the video of Aryan dumping a dead body.