When Madhu Soodhanan approaches Imman Annachi, the latter outrightly rejects him and says that he will never give up the land. Later, a furious Madhu Soodhanan murders Annachi and acclaims the land. The five men out of despair decide to take revenge for annachi's death, and kidnaps the gangster-politician. The rest of the plot revolves around what they do with Madhu Soodanan after the kidnap.
The story focuses mainly on Appukutty, Pavel Navageethan and Imman Annachi, and the three of them have performed well. The other characters present int he movie has also delivered a decent performance.
Deubtant director Hari Uthraa has narrated the story of this film, through a fragmented timeline, so the timeline keeps skipping between the present and past. Which incidentally keeps the audience in the dark and confused for the first half of the movie. Only after the interval block we understand the plotline; the issue between farmer and corporate world.
Though Hari's concept is interesting, but he fails to keep engaged. Because just when the audience start to get a hang of the plot, the story looses the pace due to a draggy flashback portion, and monotonous tone. The film looks darker and mysterious, yet it doesn't feel like such. Harish and Sathish has scored the music and he has done a decent job with the background music. Thalapathy Rathinam's cinematography skills come to fore is and he has shot well.
In short, Theru Naaigal, has a good story, but the direction could have been better.