Thani Oruvan

Thani Oruvan
Tamil	தனி ஒருவன்
Directed by	Mohan Raja
Produced by	Kalpathi S. Aghoram Kalpathi S. Ganesh Kalpathi S. Suresh
Written by	Mohan Raja Subha (screenplay & dialogue)
Story by	Mohan Raja
Starring	Jayam Ravi Nayantara Arvind Swamy
Music by	Hiphop Tamizha
Cinematography	Ramji
Edited by	Gopi Krishna
Production company	AGS Entertainment
Distributed by	AGS Entertainment (India) Atmus Entertainment (USA)
Release date	28 August 2015 (2015-08-28)
Running time	159 minutes
Country	India
Language	Tamil
Budget	₹20 crore (US$3.0 million)
Box office	₹105 crore (US$16 million)

Thani Oruvan (English: The Lone One) is a 2015 Indian Tamil-language action thriller film directed by Mohan Raja and written by Subha. The film, produced by Kalpathi S. Aghoram, Kalpathi S. Ganesh and Kalpathi S. Suresh under the production company AGS Entertainment, stars Jayam Ravi and Nayanthara. The plot revolves around IPS Officer Mithran who wants to arrest Siddharth Abhimanyu, an affluent scientist who uses secret illegal medical practices for profit.

The film's soundtrack was composed by Hiphop Tamizha. The cinematography and editing was handled by Ramji and Gopi Krishna respectively. The film was released on 28 August 2015. The film opened to positive reviews from both critics and audience. The film was remade in Telugu as Dhruva (2016).

A low-level party cadre Sengalvarayan (Thambi Ramaiah) is tying a flag to a street-lamp post. Suddenly his pregnant wife goes into labour, but he completely ignores it, as he is more dedicated to his leader and party. At the same time, the party's deputy leader (Nassar) visits the locality; as soon as he comes to know about this incident, the leader lends his car and orders his driver to immediately take the pregnant lady to the hospital; she delivers a baby boy named Pazhani before they get to the hospital. At the age of fifteen, Pazhani secures first rank in his 10th standard state exam and visits the party deputy-leader, now the chairman of the party and a member of the ruling coalition for his blessings with his father. While they are waiting in the party office for the leader to come in, they witness a murder of a rebel party candidate by their own revered leader due to caste-related comments by the rebel on him. When the leader asks Sengalvarayan to take the blame by saying that he killed the man due to rage about the rebel's comments, Pazhani volunteers to take the blame and is willing to go to jail, citing the leniency of juvenile laws in exchange for an MLA seat for his father in the upcoming by-election. The deal is agreed and carried out.

15 years later, trainee IPS officers Mithran (Jayam Ravi), Shakthi (Ganesh Venkatraman), Suraj (Harish Uthaman), Kathiresan (Sricharan) and Janardhan "Jana" (Rahul Madhav), discreetly assist the police in catching a gang which kidnapped four girls. One day Mithran receives a cryptic text message on his phone from an anonymous number stating that he/she is aware of their discreet activities. In the evening, they go out to meet that person who is revealed to be Mahima (Nayantara), who loves Mithran. Later that same night they happen to witness the murder of a man named Ramar who is a social activist with the pretense of snatch theft. Mithran and his friend catch the gang and their leader and hand them over to the police; however, four days later the leader of the gang comes to the IPS headquarters with the home minister. This political and organised crime comes as a shock to Mithran and his friends. Mithran takes them to his house and shows his research on connecting all small unrelated incidents into the global view of a hidden network of politicians, industrialists and criminals who bend the law for their own financial benefits. He singles out three prominent business oligarchs (a pharmaceutical mogul, a mineral magnate and a don). When he tries following one he realises that all three of them work as a group and they all work for a scientist Siddharth Abhimanyu (Arvind Swamy). After the completion of his training, Mithran is awarded medals for specializing in dealing with organized crime during training and also for being the best probationer of the batch, and is posted as the ASP of the Organized Crime Unit.