The story opens with a couple with twins sitting in a train. However, a thief snatches one of the sons, and after stealing the jewellery of the son, leaves the baby. However, the baby is found by a childless couple in a village. The couple hail from a large and powerful family, and they raise him as their son without telling him the truth. Thus, the twins grow up in different environment. Aadhavan (Tamil: ஆதவன்) is a 2009 Tamil action thriller, directed by K. Ravikumar and written by Ramesh Khanna.
The film features Surya Sivakumar in the title role along with Nayantara in lead roles and Murali, Vadivelu, Anand Babu, Ramesh Khanna, B. Saroja Devi, Rahul Dev, Sayaji Shinde in its supporting cast. The music is composed by Harris Jayaraj. The film, simultaneously dubbed into Telugu. The story, set in the backdrop of Nallore, a small town in Thoothukudi District, revolves around Sub-Inspector Durai Singam (Surya), a brave and just policeman who serves in his hometown primarily to fulfill his father’s (Radha Ravi) wish. Durai Singam settles every dispute in his town patiently with his words of wisdom and resorts to force only when the situation demands it.
Kavya (Anushka), a ci. A conman gains the power to see and communicate with ghosts and decides to use it to make money. His happy-go-lucky lifestyle goes for a toss when a ghost who is his look-alike approaches him with an offer. An aspiring director targets a ruthless gangster for making a violent gangster film.
His discreet attempts to research the gangster fail miserably. Finally when he gets caught snooping, the tables are turned on him. Tamil is a killer for hire with no ties and who will do any dirty job for money. He has a girlfriend who loves him but also detests his violent nature. But is Tamil really what he purports to be? A village girl escaping a bloody family feud is sheltered by a city collegian The film opens in Chennai with a crusader television journalist Bharati (Genelia) trying to unravel corruption in high places.