Plot
At the Visakhapatnam harbour, Simon runs an operation trafficking gold and luxury watches under his logistics company "Kingpin Logistics" with his lieutenant Dayalan "Dayal". Simon's son, Arjun, had rejected his father's criminal business and instead works as a customs officer. Palanisamy, an undercover police officer posing as a coolie, is killed by Dayal, who then offers a ₹2 crore (US$210,000) reward for exposing another undercover officer in the gang.
In Chennai, Devaraj "Deva" runs a strict boarding house. After learning of his friend Rajasekhar's death, he attends the funeral, but Rajasekhar's daughter Preethi drives him away. A drunken friend, Ravi, admits that he and Rajasekhar ruined their lives, prompting Deva to investigate. Though the autopsy claims a heart attack, Deva finds evidence of chest trauma. Ravi reveals that Rajasekhar, to fund his daughters' education, had invented an electric chair for cremating animal remains. When his patent was rejected for concern of criminal misuse, Simon coerced him into using it to dispose of murder victims. Dayal tries to abduct Preethi as she knows how to operate the chair, but Deva intervenes and joins the operation, using the chair with her help. Deva tells Preethi to quit her job, but Preethi is helpless as she wants to support her sisters.
Eventually, Simon asks Deva to bury Dayal, claiming he was an undercover cop. They discover Dayal alive; he reveals his identity and threatens Preethi. Simon shows Deva a video of Dayal killing Rajasekhar. Dayal later contacts Deva from Nellore, demanding obedience and holding Preethi hostage in his hideout. Deva, following Dayal's orders, gains access to a harbour vault and uncovers a heart-trafficking ring targeting coolies from Saravanan. One order is to kill Arjun, but Deva spares him and asks him to run away with his lover in a boat. Dayal retaliates by threatening Preethi on a rooftop, but Deva unsettles him by revealing his real name, Dilip, and his police past as a Constable with the Kerala Police in Thrissur.
Deva then captures Dayal's wife, Kalyani, who is revealed to be actually posing as Arjun's lover, and demands Preethi's release. Kalyani frees herself, kills Ravi, and reveals that she and Dayal were undercover partners. She orders Dayal to pursue Preethi, who escapes on a train but unwittingly calls Deva using a code from Rajasekhar, revealing she is Deva's daughter. Deva's aide sacrifices himself to protect her from Dayal, who survives. Kalyani tells Dayal to go to her car, which was parked. Dayal finds Arjun there. Dayal calls up Simon and reveals that he was alive, and kills Arjun in front of him. Simon goes to Chennai and sends his men to Deva's mansion to kill off Deva and Preethi's sisters, but Deva kills off his men with the help of his lieutenant, Kaleesha, and 18 coolies who worked with Deva. On reaching Chennai, Kalyani captures Preethi but is herself kidnapped by Simon's men. Simon kills Kalyani in front of Dayal, then seizes Preethi to harvest her heart.
Deva storms the ship, revealing his past from 30 years ago as a coolie union leader in a North Indian town called Mandwa under Simon's father, Xavier, and his partner, Kakkar, who fought against their exploitation. When they tried to have 100 coolies killed to cover up their smuggling of drugs, Deva and Kaleesha led a revolt, eliminating Xavier at the cost of 70 coolies. A young Simon tried to witness his father's death, but his mother prevented him from doing so, with it becoming a traumatic event in his life. Telling Simon that Preethi is his daughter, Deva duels and kills him, and the coolies destroy the ship. Later, Deva, Kaleesha, Preethi, and her sisters are kidnapped and sent to a desert by a global syndicate leader named Dahaa, who is revealed to be Kakkar's son. After recognising Deva, Dahaa offers Deva a place as his right-hand man; Deva agrees, on the condition that his coolies are spared. Dayal is eventually captured and buried alive.
Preethi and her sisters depart abroad, forgiving Deva without knowing he is her father, calling him "uncle" in her farewell.
