Chitra's mother-in-law requests her to come and live with her as she is very alone after her husband's death. While returning home, she meets her mother-in-law ( Lakshmi) waiting for her. She plans to meet him at the station to express her decision. Karthik, who heard about it, attacks the man for misbehaving, and makes him vacate Mumbai.Р”Р„fter much thought, Chitra decides to marry Karthik for herself and her son. Chitra's neighbour once attempts to rape her she manages to escape. Chitra meanwhile gets confused regarding second marriage due to the trouble given by her neighbour's husband and Shiva's passion for Karthik. Karthik understood her intention and stayed away from her. She refuses, and once for all, avoids Karthik. Karthik's father ( Nagesh) understands Karthik's interest towards Chitra. Shiva moves close to Karthik and his family, while Chitra tries to prevent relations with Karthik. Knowing all this, Karthik's parents want them to get married. She got Srikanth's job from the bank due to his untimely demise and thus she had moved ahead. Her brother got a good job offer in Singapore and Chitra forced them to leave her. As per her husband's earlier wish, Chitra adopts a baby boy, Shiva. Distraught, he leaves to Chennai by train, and died in the same train accident as Aruna. When he goes to Ooty, he finds that his dad lied to him, and his mother banishes him forever. Within hours of the marriage, Srikanth receives news that his mom is on death bed. Srikanth disobeys them and marries Chitra. While Chitra's family do not object to the marriage, Srikanth's Brahmin parents in Ooty object to the marriage. She meets SBI officer Srikanth ( Ramesh Aravind) through various accidental events, and they fall in love. She was a graduate in Chennai living with her brother's family and searching for a job. Р”В¬hitra then tells Karthik about her life. Karthik then quit the police job and moved to Mumbai. Due to a signalling error, her train collides head on with another train and she passes away. Aruna, in a bid to soon meet Karthik, leaves to Chennai by train. Karthik quits from Bomb squad and informs Aruna. Karthik goes to Chennai to meet Ajay, who tells him about Aruna's fears. But Karthik's colleague and friend Ajay loses a leg in another defusion work. While Karthik and Aruna are in Tirupur to attend Aruna's friend's marriage, Karthik is pulled to Coimbatore to defuse a bomb, and he accomplishes. Though Aruna did not want Karthik to endanger his life every now and then, she does not tell him to quit, due to her respect of his desire to work as defuser. Eight years earlier Karthik was an police officer with the bomb defusing squad. When she conveys his parent's wish, Karthik explains about his late wife Aruna ( Jyothika). Weeks later, Karthik's mother requests Chitra to tell Karthik to get married. Karthik's parents like Chitra and all become friends. Karthik invites Chitra to his home to meet his parents.

Karthik, in return, accompanies her to a police station to get back her snatched handbag. After some days Chitra voluntarily talks to him. When Chitra hesitated to travel in the same train with Karthik, he becomes exasperated and explains that he only talked to her because both are from the same locality, both are Tamilians, and he promises her that he will never talk to her again. During a train strike, he invites her to travel in an auto to reduce expenses, but she declines. He offers his seat, but she does not want to accept it. While returning home, he again meets her in a train.

Karthik meets Chitra while opening a bank account. Karthikeyan ( Arjun) is a photographer-editor working in Indian Express in Bombay.

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