Dr. Karnunakan Menon’s family:
Father/Husband: Dr Karunakaran Menon,
Mother/ Wife:: Vanaja Menon, professor
Son: Arun, medical student
Subhadra Amma’s family:
Mother: Subhadra Amma (widow)
Son: Mahesh, a bank manager
Adopted daughter: Shalini (She was brought to Subhadra Amma as an stray by Markose. She is Vanaja Menon’s illegitimate daughter)
Villain: Markose had handed over the Shalini, as an orphan baby, to Subhadra Amma. He blackmails Vanaja over the illegitimate daughter
Markose’s son: Elias, a criminal
Police officer: Narendran, Circle inspector
Background: Shalini, the illegitimate daughter of Vanaja, had been brought up by Subhadra Amma, as her own daughter. The child had been brought to her as a baby by Markose. Subhadra Amma’s son Mahesh looks upon Vanaja as his own sister.
The plot unravels when Mahesh marries Amala, the pampered daughter of Dr. Karunakaran Menon and Vanaja Menon.
Storyline: After marriage, a jealous Amala suspects Mahesh of having an illeagal affair with Shalini and accuses him openly of the same. An angry Mahesh slaps Amala , who promptly packs her bags and returns home to her parents. However, the parents convince her otherwise and persuade her to return to her husband.
Frightened about Amala, Vanaja probes the truth behind Shalini’s background. Subhadra Amma tells her the truth about Shalini’s adoption. A shocked Vanaja comes to realize that Shalini is her own daughter, whom she had abandoned as a baby.
Overcome by guilt and remorse, Vanaja withdraws into a shell, gradually losing interest in her family affairs and her profession.
She tries to persuade Amala that her suspicions of Mahesh’s infidelity are groundless. However, Amala only gets further infuriated when she sees her mother’s undue attachment to Shalini and decides to kill Shalini.
Sensing Amala’s intentions, Vanaja persuades Subhadra Amma to let her take Shalini to her house. An angry Amala severs all connections with her parents and refuses to even see them.
However, Vanaja is happy that she is now reunited with her illegitimate daughter Shalin. She showers love and care upon her. However, the twist in the tale comes when her son Arun (not knowing Shalin’s true parentage) is infatuated by Shalin’s beauty. A shocked Vanaja, now works to resolve the knotty issue to avoid the rude possibility of a brother unknowingly falling for his own sister.
Things take a turn for the worse when Markose emerges from recesses of the past to blackmail Vanaja and she starts paying him to buy his silence over her past. Markose futher forces Vanaja to agree to Shalini’s marriage to his son Elias, a criminal.
The unhappy marriage saddens everyone and Shalini leads an unhappy life.
However, one day Elias is murdered and everyone is stunned. The murder investigation is entrusted to police officer, Narendran, Circle inspector. During the course of question, one by one the web of intrigue and dishonesty begins to untie.
Keep watching for an charming climax.