Guru(Simbu) falls in love with Anjali(Divyas), who is the daughter of dreaded rowdy Veerabhagu('Kalabhavan' Mani). Realising that his threats have no effect on Guru and that his henchmen are no match for him, Veerabhagu tries to find other ways to keep his daughter away from Guru.

Kuthu's fast pace helps us overlook the fact that it is made up of exactly the same elements that have gone into many recent movies (including Simbhu's own Dhum ). It has the wayward son receiving, and not caring about, scoldings from his father and being supported by his mother. It has an unrealistic college scenario with a bumbling principal and actors too old to be students. It has group songs and fights brought about by rowdies teasing the heroine. But a script that is laced with humor helps make these portions watchable. Simbhu and Karunas have several funny lines with Vijayakumar (like the exchange about the benefits of studying) and there are some nice jokes scattered around as Livingston makes his rounds too.

The romance turns out to be the least interesting part of the movie. The dance that Simbhu and Divyas put on at the fresher's function is too risque to be realistic and Simbhu's love fails to have a strong foundation since he falls in love just to spite her father and his henchmen who warn him against it. But Vijayakumar's pep talk when he comes to know of Simbhu's romance is well-written and also a little surprising since it comes at a point when we expect him to launch into another tirade at Simbhu.

The last third of the movie really helps prop the movie up and the director does a nice job stretching out a really thin story. It has some nice ideas (like the way Simbhu figures out where Divyas is stashed away) and takes some nice turns that are a little surprising and entertaining. One such interesting turn is to make Vijayakumar and wife land up in 'Kalabhavan' Mani's house. Vijayakumar's questions and Mani's exasperation are very funny. In the same way, Simbhu's final idea is also clever and manages to be a little different from the usual climax.

Its Simbhu's little finger that gets the attention this time as he comes up with a new punchline. Unfortunately, the punchline gets lost in laughter since his action with the finger makes him looks like he is asking for a restroom break! But he dances and fights energetically as usual. Divyas looks to be another one-film heroine. Kalabhavan Mani, who usually overacts, gets it right here with just the right amount of over-the-top antics but Kota Srinivasa Rao, the villain in Saamy , is wasted. Nibunaa... is a pleasant number in the soundtrack.