There are two characters in the story of Mahabharatha. One is Arjuna and the other is Karna. Arjuna is a skilled warrior while Karna is skilled in helping other peoples who are in need.

The same story is followed here. Here, Karthikeyan and Srinath are the two main characters in the story. Let’s see what happens in the life of these characters.

The most famous districts of Tamil Nadu- Udumalaipet taluk of Tiruppur and Erode district in the whole is being dominated by the most powerful mafias named Devaraj and Shukla. Both are brothers and Devaraj handles Erode district as a whole while his brother controls Udumalaipet taluk as a whole.

The Police department is controlled by these mafias and they too, are dejected by their daily nefarious activities because of their political influence.

The DIG of Tiruppur and Erode district appoints Srinath to work under Devaraj to observe his activities for the next 3 months while the other officer for the Udumalaipet is not appointed. The Police department names this Operation as “The Oxygen” to eliminate the gangs completely.

Later, we gets introduced to Karthik, an unemployed youth from Pollachi who goes to Udumalaipet in search of job and eventually joins the gang of...