Being orphaned at the age of six years, Sakthivel is raised by his elder brother, Chandra Prakash and his sister-in-law Durga, whom he means as his mother, because of her immense affection to him. They are all settled in Udhayampalayam near Coimbatore district.
As a young guy, Sakthi has got trained himself in "Silambam, Vilari and in National Cadet Corps under Air Wing." Sakthi aims to join Air Force after, being attracted to the studies of Air force though he wishes to join IPS, at the beginning. Besides being an intelligent and expert in Martial Arts, Sakthi is also a famous and popular student in his 10th and 12th classes, due to his motivational stories, where he depicted the themes of motivation, patriotism and Anti-Corruption.
Sakthi also won several badges and awards for his stories: "Best views on social problems" For Sakthi, the reason for his success is his close friend Akhil Ram
friends from childhood, raised up in an orphanage
. Sakthi's friends popularize him just not for the strength in his academics and sports, but also widely respected due to Sakthi and Akhil Ram's strong friendship.
Three years passes and Sakthi had finished his college. He has completely changed his looks with an army-hair cut, small beard around his neck with a small moustache. Sakthi is about to get engaged with his girlfriend Ishika, an investigative journalist in Coimbatore, with whom he is in love from college days.
Further, Sakthi is waiting for his job in Air Force as he have finished his training. Akhil Ram is now going into some illegal activities as he have not been selected in the IPS. But, Sakthi himself, have an own agenda to be executed before his postings. Currently, Akhil and Sakthi's relationship is strained.
He goes to meet her in the Ganapathy temple, near Ganapathy, where she has been wearing a shawl made dress with a long hair and beautiful face. She comes towards Sakthi, where she gets stopped by some Brahmins, working in the temple. While speaking with them, Sakthi calls Ishika suddenly and she hangs his call.
Here, Sakthi calls a girl and he tells her to give his rose balloon to Ishika. However, his plan backfires since she returns the rose balloon to the girl itself.
Now, Ishika comes towards Sakthi and they both stands besides.
"Hey. How many times could I have told you not to do like this?" said Ishika.
"If you have attended the call and said, "I love you" there is no problem like this, right" said Sakthi.
"How many times should I say I love you to you?" asked Ishika.
"For a week, you have to say me I love you!" said Sakthi.
"For weeks, should I say "I love you" to you. For seconds, if I say I love you to you, is it okay?" asked Ishika.
"Hey see…How many seconds are wasting? Tell me I love you" Joked Sakthi.
They have a small romance fight and leaves to home, where Sakthi meets his brother and sister-in-law, seeking their blessings.
"Before coming to meet us, you have gone to meet Ishika. Is it Sakthi?" asked Chandra Prakash.
"No brother. Not like such. I was delighted to meet her after five years. Do you know?" asked Sakthi.
"It's okay, Sakthi. I just told for fun. Ok. Have a nice day" said Chandra Prakash and he leaves to meet a client for his advocate case.
Sakthi's sister-in-law learns that his and Akhil's friendship have been strained for few years and tries to make them up, which is stopped eventually by Sakthi. He and Ishika have a blast to Idukki district of Kerala.
They had a great day in Idukki district and one day, Sakthi desperately takes Ishika's phone to contact his brother as his phone got switched off and after speaking with them, he notices some of Ishika's photos about Arms Trafficking and Drug Trafficking business, taking place in Coimbatore district and Vijayawada, and he gets shocked.
With the photos, Sakthi confronts Ishika, who admits her guilt of undercover investigation. However, she is surprised to the questions of Sakthi about these and she indeed, asks the reason behind Sakthi's investigation.
"I am not Sakthi…Indeed, my name is Sai Adhithya, Sakthi's look-alike" said Sakthi, a shocking truth to Ishika.
Knowing that, Ishika will not believe this, Sai Adhithya shows the photos of Sakthi's dead photos and he himself, tells the events that occurred before four years.
Sai Adhithya is three-years senior to Sakthi and he was working as the DCP of Vijayawada district, while Sakthi was in Kashmir for his training. He was also, indeed travelling in the same train, in which, Sakthi also travelled.
Some of the goons, who learned about their trafficking investigation, misunderstood Sakthi as Sai Adhithya and they stabs him to death in the train, despite Sai Adhithya's attempt to save him.
Learning about Sakthi's family, Sai Adhithya further learned his mannerisms and trained himself in Martial arts skills before coming to meet Sakthi's brother. Indeed the reason behind the investigation of this case, is due to the DGP of Vijayawada, who suspects the illegal activities to be undergone in Coimbatore, as the head district.
Sakthi's death makes Ishika shattered and she leaves Sai Adhithya in Idukki district and goes to Coimbatore district. The next day, she goes missing which shocks Sai Adhithya. Suspecting that, she might have been kidnapped, he rushes to Coimbatore and decides to save her at any cost.
However, the next day, a bleeding and dead Ishika is found near the bushes of Irugur road, Coimbatore district. Akhil also comes to the spot and Sai Adhithya is shattered with Ishika's death.
Akhil now comes to meet Sakthi's brother and he reveals the exact reasons to them. He also reveals that, the guy with them is not Sakthi, but Sai Adhithya and further, reveals that he was one of the reasons for Sakthi's death, because of his profession as IPS officer.
Akhil himself, was in an undercover mission to trap some Arms Trafficking goons and indeed he suspects that Ishika was killed after being known that she is an undercover Journalist. Akhil confronts Sai Adhithya, for his emotions in Ishika's death.
In further, Sai Adhithya is emotional.
"If Sakthi is not dead, then Sai Adhithya's family will suffer" said Sai Adhithya, which leaves Akhil in shock.
Since, the latter is not Sai Adhithya but, indeed Sakthi. Now, an other flashback is revealed by Sakthi. Shortly, after the completion of his training in Air Force, Sakthi was coming to Coimbatore in train, in which Sai Adhithya was also travelling.
There, in the train, Sakthi noticed some of men beating up Adhithya and in a bid to avoid confusion he masks his face and tried to save Adhithya. But, he was stabbed to death by those goons.
Sakthi was stunned and doesn't know what to do. Hence, he avoided it and returned to his seats. However, a police officer, DGP Vijay Krishna, Sai Adhithya's mentor, noticed him in the train eventually, after learning Sai Adhithya's death.
He was happy that, there is a look-alike for Sai Adhithya and he forced Sakthi to take the position of Sai Adhithya as the DCP. However, Sakthi refused as he considered IPS as a dangerous one to his life.
But, he agrees after learning about the dreams of Sai Adhithya for IPS, through his phone and has indeed, sacrificed his Air force dreams, in-order to fulfill the unfinished work of Sakthi's. For this mission DGP Vijay Krishna gave him a special training in Dehradun, after talking with his Air force associates. As per the duo's agreement, after Sakthi completes Adhithya's works, he will return to Air force again, to which Vijay agrees.
Akhil feels guilt for hurting his friend Sakthi and they all reconciles with their families. Sakthi vows not to marry after seeing Ishika's death. In the same way, Vijayan, a famous doctor in KMCH Hospitals goes missing and indeed, the next day, he is found dead which shatters his daughter, Yazhini.
As Ishika's and Vijayan's characters are spoiled by the public, Sakthi vows to prove them as good and decides to start the investigation on a three-tier basis: "Arms Trafficking and Drug trafficking under Akhil's hand, Ishika's and Vijayan's death under Sakthi's hand, while they both collides to investigate the masterminds."
Sakthi searches into Ishika's house and learns that, she used to go for Bangkok, a many times with Dr. Vijayan for some important works and he decides to go for Bangkok with Akhil's companionship.
Seeing the photo of the lady with Ishika, they seeks permission from DGP and flies for Bangkok. Here, Yazhini too, has arrived to investigate her father's demise and both Sakthi and Akhil finds this out.
From the beginning the duo's relationship is strain with Yazhini right after the incidents. Akhil and Sakthi meets the lady and learns that, Ishika had collected the evidences regarding the Gun smuggling and Drug smuggling businesses in Bangkok with the help of Dr.Vijayan, who had also agreed to help her out in this after learning that, his own relative Meenakumari and his younger brother Vikram is mastermind behind the illegal activities and he vowed to punish them off.
But, in reality, It has not happened. Before the execution of this plan, Yazhini's father and Ishika was killed with a police officer
Sai Adhithya
, in-charge of this case in a train. However, a minute after the lady's confession, she is killed by some goons in the place while Akhil and Sakthi are left injured for dead.
Yazhini, who too just, arrived in the spot to meet the lady sees the injured Akhil and Sakthi and rescues them to India, with the help of Bangkok Government. After recovering, Sakthi's brother asks him either to choose him or his profession. Sakthi, with a heavy heart chooses to investigate the case, after which he disowned him and leaves the place with his family.