The Sole One) is a 2015 Indian Tamil-language action thriller film directed by Mohan Raja, who co-wrote the script with Suresh and Balakrishnan.

Nayanthara, Thambi Ramaiah, Ganesh Venkataraman, Harish Uthaman, Sricharan, Rahul Madhav, Nagineedu, Madhusudhan Rao, Saiju Kurup, Nassar and Mugdha Godse plays supporting roles.

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 was released on 28 August 2015 to critical acclaim, with praise for the direction, screenplay, storyline, pacing and the performances of Jayam Ravi and Thambi Ramaiah but especially Aravind Swamy.

After 8 years following the huge success of the film, Mohan Raja announced the sequel, Thani Oruvan 2, reuniting with Ravi and Nayanthara.

In 1990, Sengalvarayan's son Pazhani secures the first rank in his 10th standard state exam, and visits Tamizhvanan, now the chairman of the party and a member of the ruling coalition, for his blessings with his father.

In 2015, trainee IPS officers Mithran, Shakthi, Suraj, Kathiresan and Janardhan 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 they are aware of their discreet activities.

Later that same night, they happen to witness the murder of a man named Ramar, who is a social activist with the pretence of snatch theft.

Mithran takes them to his house and shows his research on connecting all small unrelated incidents into the global view of a hidden crime network, who bend the law for their own financial benefits.

He singles out three influential persons: pharmaceutical mogul Ashok Pandian, mineral magnate Charles Chelladurai and chieftain Perumal Swamy.

At that time, Angelina, a Swiss pharmaceutical company owner and activist, tries to make generic medicines for life-threatening diseases available in India at low cost affordable by poor people.

While Mithran is recovering from the gunshot wound in the hospital, an electronic bug (GPS + audio transmitter) is implanted during surgery by Siddharth.

Siddharth tries to sell the technology and rights to extract medicine from the seaweed to multinational pharmaceutical companies, but is opposed by Manimekalai.

Mithran makes a deal that he would save Siddharth's life for information and evidence on all of his criminal associates and activities and gives him a bulletproof vest to fake his death during his transport to the court.

In June 2013, Mohan Raja stated that he would direct his brother Jayam Ravi again in a film to be produced by AGS Entertainment and that he had been working on the script for the past six months.

[10] In March 2015, it was reported that the film would also feature Bollywood actress Mugdha Godse, who had been paired opposite Arvind Swamy and would make her Tamil début.

[15] Devi Sri Prasad, Yuvan Shankar Raja and S. Thaman were first reported to be the music composers of the film,[16][17] with the latter revealing that he had been in talks.

[20] The principal photography for this film kickstarted on 6 December 2013,[21] with a two-day schedule in Chennai at Binny Mills where a railway station set had been erected, and romantic flashback portions involving Jayam Ravi and Nayanthara were shot.

[3] The film opened to critical acclaim, with praise for the direction, screenplay, storyline, pacing and the performances of Jayam Ravi and Thambi Ramaiah but especially Aravind Swamy.

The authors (Subha), are credited as co-writers, and this is the first time their pulp sensibility really shines through", calling it "a pretty, smart pulpy thriller".

[36] Behindwoods rated the film 3.25 out of 5 and stated "Raja delivers a commercial entertainer with all its necessary elements in an intelligent manner and in an engaging fashion".

[37] Rediff stated "Thoughtfully etched-out characters add depth and intensity to the narration, while great music and impressive cinematography enhance the overall experience".

[38] Sify wrote, "Powered by a staggering performance from Jayam Ravi and Arvind Swamy, director Mohan Raja does a good job of creating a taut, intelligent, and deliciously twisted action drama that delivers so much more than your average thriller...what makes Thani Oruvan, an enjoyable watch is its, original screenplay, the smart presentation and excellent characterisation".

[39] Deccan Chronicle gave it 3.5 stars and wrote, "With the use of technology, an emphasis on slyness and mind over matter, director M. Raja and his team have crafted a film that is sure to keep you at the edge of your seat while entertaining you thoroughly in the process".