Initially, Sathya thinks that his job is just as mundane as Nisha's, who works in a call center. One day, disturbed due to a misunderstanding with Anwar involving Ayesha and Vicky's (Nisha's brother) relationship. Sathya misses a call, which turns out to be from the mother of a boy who was kidnapped. Sathya deduces that the boy is kept hostage in a train, and with Perumal's help manages to nab the kidnappers and reunites the boy with his parents, without letting anyone else know. Perumal believes that the 100th call will change the operator's lives. Sathya doesn't believe until his 100th call turns out to be from Sandhya, who was earlier presumed dead. Using his wits, Sathya manages to save Sandhya from the clutches of the kidnappers and hands over Sandhya and the kidnappers to Anwar to preserve his anonymity. However, Sathya doesn't find any news pertaining to Sandhya's return to her house. Disturbed, he reaches out to Anwar, who refuses to acknowledge that Sathya handed over Sandhya to him.