Pugazh is an IITian and Oxford alumnus with a master's degree in chemical engineering. With the help of his relative Inspector Joseph, he succeeds in tracking down a wanted criminal named Raaka and trapping him to Joseph. The scene then shifts to a village, where Pugazh is attending the wedding of a Tahsildar's daughter. He meets Janavi, a friend of the bride, and instantly falls in love with her. After persistent wooing, he succeeds in winning her heart.

Janavi takes Pugazh to Munich (Germany) to introduce him to her father J. D., a wealthy businessman and covert arms smuggler. During his stay in Bern, he encounters J. D.'s gang, consisting of Shaan, a hotel pimp named Max, and another henchman. After initial confrontations with the three of them, he starts eliminating them one after another, and then J. D. becomes his remaining target. Janavi soon finds out that Pugazh is plotting to kill her father and warns Pugazh's mother about her son. On the contrary, Pugazh's mother not only knows and supports what Pugazh is doing, she also reveals that she is not his real "mother" and tells her why Pugazh is after her father.

Pugazh's father was Major Saravanan, a patriotic Indian Army officer. During a peacekeeping mission, he noticed J. D., Shaan, Raaka, and their two henchmen, who were then army officers working in his team, accepting money from terrorists in exchange for allowing them to carry out their activities. When he confronted them, they killed him and fabricated a story claiming that since he accepted money from terrorists to help them, they killed him considering the safety of the other soldiers and themselves. He was stripped posthumously of his titles, honours, and badges. During his funeral, his family, consisting of his widow and a young Pugazh, were humiliated as the military withdrew his honors. the villagers banished them from their village. The villagers also barred Pugazh from performing his father's last rites and threw the dead body into a sand pit, where it got lost in sand storm. The villagers also brandish the forehead of Pugazh's mother with the title "wife of a traitor". She sends her son away with Shaan's estranged wife (the adopted "mother") as she did not want him to grow up carrying the stigma of being the son of a disgraced army officer.

In the present day, J. D. takes Pugazh to India to retrieve a Blu-ray containing J. D.'s secret information, which Pugazh had earlier received from Shaan and given to Joseph. Pugazh soon finds out that Raaka has escaped. Pugazh manages to flee from J. D.'s and Raaka's clutches, and after a thrilling chase, he reaches an abandoned temple outside his village where he reunites with his mother, who had been living there since being banished from the village. J. D., Raaka, and their henchmen arrive there. They kill Joseph and injure Pugazh. Pugazh kills Raaka and fights with J. D., weakening him. With all of the villagers assembled around the abandoned temple, Pugazh forces J. D. to reveal the truth about his father to them. After his confession, Pugazh kills him in revenge for his father's death. With the truth about Saravanan finally revealed, the army reinstates his titles, honours, and badges and also returns his army badge and uniform to his widow.