The film, which is loosely based on Main Hoon Na, stars Ajith Kumar and Nayanthara, alongside Jayaram, Suman, Nassar, Navdeep and Piaa Bajpai.

In the film, Shiva, a CB-CID officer, embarks on a covert mission to protect the daughter of a fugitive by posing as a college student.

During his regular jogging sessions, Shiva spots Ram Prasad and chases him until he escapes with the help of an helmet-clad bike rider, who is later revealed to be Narain.

In September 2007, early indications suggested that Ayngaran International were set to make a film starring Ajith Kumar and directed by Venkat Prabhu,[2] however the chance went to first-time director Raju Sundaram, in a project titled Akbar.

The 40-member unit consisting of Ajith, director Raju Sundaram, cinematographer Arjun Jena, action choreographer Stunt Silva, and a few stuntmen from Chennai flew to Hong Kong on 14 January 2008 and began their first schedule for a 10-day stint.

[1] The role eventually was given to Katrina Kaif, who was set to make her debut in Tamil films with Aegan,[14] however she later opted out due to callsheet clashes.

[6] Nassar and Suhasini were selected to play the roles of the parents of Ajith,[17] whilst Raju Sundaram's younger brother, Prabhu Deva was given a chance to make a cameo appearance in the film as a dancer but politely refused.

[18] Supporting actors Livingston, Sathyan and Sriman also play roles in Aegan, as does model Piaa Bajpai, who appears as the ladylove to Navdeep.

[21] Yuvan Shankar Raja was signed on as the music composer whilst Arjun Jena was the cinematographer for the project[17] and Milan, who did the art direction for Billa, renews his association with Ajith in the film.

It was noticeably, the third time Yuvan was scoring music for an Ajith Kumar film, after Dheena (2001) and Billa (2007), the songs of which had been very popular and went on to become chartbusters.

[23] The soundtrack released on 9 October 2008,[24] at a private ceremony at the Hello FM Studios by composer Yuvan Shankar Raja as the lead cast and the director were away shooting the video for the song in Switzerland.

Ajith Kumar was praised for being "at his best but look[ed] plump and stiff in some scenes where he need to be relaxed and natural", drawing comparisons with a similar feedback from his previous venture, Billa.

The reviewer added that "Piaa Bajpai is promising, Jayaram as Principal and Haneefa have been wasted and do little in the way of bringing smiles to the faces of the audience".

It criticizes Piaa Bajpai claiming she "hams it to glory", and "makes you want to watch Amrita Rao's naivety in the original", however, it praises Navdeep citing he is "far more natural, but you pity the fact that his role is so small".

In reference to minor characters, Cochin Hanifa is praised while Suhasini Mani Ratnam's role is said to be "terribly dealt with, robbing her part of any sympathy".