Maya Mehrotra, owner of "Fashion and the City" is a young and successful business tycoon, suffering from dark past and troubled childhood due to her abusive dad, Ashwin. Carefree and cheerful, Arjun Sharma is a photographer. His childhood friend, lawyer Saanjh Mathur, secretly loves him. As Arjun rescues Maya in an elevator accident and later, from Ashwin, she falls in love with and proposes him.
A series of circumstances including Maya rescuing Ayaan from jail, revealing her past to Arjun, helping him realize his past mistakes and uniting his family in the process leads to Arjun falling for Maya. Thus, he ends up proposing her in Mauritius, much to Saanjh's dismay. As Maya and Arjun plan their wedding. Ashwin tries to provoke Saanjh and Vandana against Maya to break her wedding but in vain as Maya kills him. Arjun and Maya get married.
When Jhanvi discovers that Maya is behind the murder, Maya pushes her off the building causing Jhanvi to go in a coma and blames Jhanvi for Ashwin's death. Later, she fakes a miscarriage and blames Saanjh, leading to a fall out between Arjun and Saanjh. Hurt, Saanjh leaves for London.
Three years later
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Maya has completely isolated Arjun from the world. Arjun is shown to have realized Maya's mental illness and tries to leave her and break off the marriage but in vain. Saanjh returns to India with her boyfriend Samay Ahuja. Saanjh and Samay are about to get married. Later, it is revealed that Samay has been Maya's obsessive lover for the last eight years.
Maya accuses Ayaan in her fake attempt to rape case. Later, Saanjh tries to expose Maya but Samay kills Prem to discard all the evidences against Maya. Later, on his wedding day, Samay escapes and abducts Maya but Arjun saves her as she is pregnant with his child and thus gets to know about Samay and Maya's relationship.
Six months later
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Maya is in a mental hospital where she admitted herself for her treatment to pretend to be cured. Ayaan tries to expose Maya but she runs her car over Ayaan which leads to him being getting severely injured. Later, during a fight with Vandana, Maya falls from the stairs and loses her unborn child. Filled with anguish and desire for revenge, Maya kills Vandana. Maya fakes her death by knocking out Arjun and then killing and planting her look alike, Mansi, at the scene of the crime. Arjun is convicted of her murder and is given death sentence.
Arjun believes that Maya is alive and escapes from jail to expose Maya. Maya joins hands with Samay to plot against Arjun and Saanjh but Arjun convinces Samay that Maya is only using him. Maya kills Samay and abducts Saanjh. Arjun rescues Saanjh and Maya is proved guilty in court after her own mother testifies against her and is sentenced to be hanged. Arjun realizes his love for Saanjh, and so does Saanjh and both decide to get married, much to Maya's dismay. She sends many people to injure and kill Saanjh, but none of her plan work. On the day Maya was going to be hanged, her punishment changed to life time prison. Finally, Arjun and Saanjh get married. Saanjh is still scared of Maya. Later, Maya is sent to solitary confinement.
Five years later
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Maya is still in jail. Arjun has become a millionaire and has tight security around the house. Ayaan is a widower and has a daughter named Arohi. Saanjh and Arjun raise his child together. Maya escapes from jail by, once again, faking her death.
Maya unintentionally hurts Ayaan's daughter due to which Ayaan moves away from Arjun with Arohi. Later, Arjun and Saanjh decide to use a surrogate as Saanjh cannot conceive. Maya manages to somehow become their surrogate leaving Arjun and Saanjh shocked.
Saanjh decides to care for Maya despite her longtime animosity towards her, whilst Maya plots against everyone. As the pregnancy nears an end, Maya asks Saanjh for Arjun in exchange for the baby but he expresses his hatred for Maya and love for Saanjh. Maya gives birth to a baby girl and runs away with it. Saanjh approaches Maya who points the gun at her. Arjun shoots Maya from behind. Saanjh finds out the gun which Maya pointed on her was empty. Thus Maya dies by Arjun's hands confessing her obsessive and limitless love for him.