There are two tribal villages in a forest; Kottai Kaadu and Kooni Kaadu. Gopika, is a silent girl who is pampered by her mother and adored by the villagers will be living along with her parents in Kottai Kaadu. The later village, Koonni Kaadu, where the main lead Ajay will be living along with his friends. Is filled with a gang of illiterate tribal people and is situated opposite to Kottai Kaadu, 

The primary rules of survival in Koonni Kaadu is that, they should spend their days asleep and nights hunting, and they should never cross their tribe borders. If they break the rule, then they will be condemned to endure severe punishments. In this situation, one day, a curious Ajay along with his friends cross the borders and goes into Kottai Kaadu. 

Unexpectedly he will spot Gopika trying to battle her way from a mountain lion. Ajay will jump in and help her by killing the lion. A grateful Gopika coveys her thanks to him, and immediately fall for each other. Meanwhile, with the consent of Gopika's parents, the village panchayat head will arrange an alliance for Gopika. The rest of the plot revolves around how the couple face the consequences caused because of their love affair.

As Ajay performs like an illiterate in the film, he has very few dialogues. His major way of conversation is through body language, and he has done a convincing job at it. While Gopika delivered a notable performance. 

Director Hari Krishna has attempted to make a  film based on how a simple villager and a tribal form a tentative friendship which later blossoms into a love relationship. His story may have an interesting idea behind it. But he could have directed it in a different way. Raghavendra has composed the music for this film, while the songs are tasteless, he scored his way with the background music. Arivalagan's cinematography skills come to the fore and he has shot well.

In short, Aaram Vetrumai, can be much better.