Aadhavan (English: Sun) is a 2009 Tamil action-comedy film directed by K. S. Ravikumar and written by Ramesh Khanna. The film features Suriya and Nayantara in the lead roles, with 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 released on 17 October 2009 and performed well at the box office. The movie was dubbed in Hindi as “Dildaar – The Arya” and “Ghatikudu” in Telugu. The story of the movie is based on the 1990 Malayalam movie His Highness Abdullah. The movie was remade in Bengali as Shikari starring Bangladeshi superstar Shakib Khan.
Aadhavan (Suriya) is a professional assassin working with his father Ibrahim Rowther (Sayaji Shinde) and brother Tharani (Anand Babu). Doctor Abdul Kulkarni (Rahul Dev) hires Aadhavan to kill prominent Judge Subramaniam (Murali), since he is handling the inquiry and verdict on Abdul’s child kidnapping, murder and organ trafficking cases in Kolkata. Aadhavan attempts to murder Subramaniam but fails at the first attempt. After Abdul insults him for his inability, Aadhavan is angry with himself and promises to kill Subramaniam within ten days. He threatens the Judge’s comical servant Bannerjee (Vadivelu) to help him get into the house as Murugan, Bannerjee’s brother in law, while he locks up the actual Murugan (Sathyan) in his ship.
Slowly Aadhavan begins to win over the members of Subramaniam’s household – his mother (B. Saroja Devi), his beautiful niece Thara (Nayantara) and his other relatives. Thara is attracted to Murugan’s (Aadhavan) intelligence and simple-innocent nature. Aadhavan tries to assassinate the judge at home in the middle of the night and also plants a bomb in Subramaniam’s van, but both attempts fail. Meanwhile, Subramaniam’s entire family is on a trip to Darjeeling, and Thara asks Aadhavan to hide a guitar belonging to Ilaiyaman (Ramesh Khanna), her madcap musician cousin. Aadhavan uses this opportunity and plants a mobile bomb in the guitar and places it in one of the cars which explodes at the wrong time and he fails to kill Subramaniam yet again. Meanwhile, a security officer at Subramaniam’s house keeps informing Abdul Kulkarni of Aadhavan’s entry into the house and all his progresses and failed attempts.
Thara is now suspicious about Aadhavan but when she questions him in secret, he informs her that he is really Subramaniam’s long lost runaway son Adhavan. Thara soon informs all the members of the household about Madhavan and they are overjoyed and Thara and Aadhavan fall in love. However, they hide it from Subramaniam alone, because of his hatred towards Madhavan. Aadhavan, however tells Bannerjee that he lied to Thara about Madhavan to distract her suspicion, and that he really is not that runaway son at all. However, on Thara’s birthday, a flashback reveals that Aadhavan is indeed the runaway Madhavan.