Karthick find things unusual around Yamini, by that he means that there is some attraction going between them. From Karthick's perspective he sees Yamini as a person getting under his skin in an emotional way. Yamini sees a person with genuine passion and appreciates his ethics passively. She tries to help him out by arranging for a advertisement photo shoot. Karthick's real passion being wildlife photography flops the chance - can also be put down to nerves. The vibes they share gets passed on the audience when they come close to each other.
Karthick's professional role model is Madhesh Krishnaswamy(Ravi Prasad). He manages to hussle and find a shot towards being his assistant. Sundar wants to accompany him and also invites Yamini, Yamini in turn agrees since Karthick is coming. The assignment is about birds. Karthick chases for the perfect shot and manages to capture many good clicks. A perfect shot happens, while taking this shot a leaf swirls and falls on Karthick's face from the bird's perch. It is an artistic way of telling that the shot is not his pro skils but accident/destiny/meant-to-be. Out of the blue. "Kaathal en Kaathal" happens, didn't have any meaning to the mood around it. Maybe the director wanted to have a SOUP song for the sake of it.
Madhesh classifies Karthick's photos as shit, and throws him out. Heartbroken Dhanush finds warmth in the company of Yamini. Having kissed his friend's girlfriend he runs away for a few days from guilt/ to get his head straight / just to escape his failed endeavor. After a couple of days, Karthick realises that his photos were used by Madhesh as his own and shoots up to even more fame. When he finally comes back home, he finds Yamini in love with him and himself sharing a crave for her.
They get married and have a period of bliss - "Nan sonnadhum mazha vanthucha" happens. Yamini merges with Karthick's lifestyle. As a freelance photographer and herself a working woman they put together a decent living. One day, Karthick's signature photo - now Madhesh's, finds frontpage in the newspaper. Heartbroken Karthick falls down and suffers an accident.
He wakes upto a reality where he feels that his future has been torn down and hopes dashed. He still loves his camera but doesn't want to be acknowledged by the world. Just the artist and stage, no audience. The spoilers from here on would kill Selva's wonderful work. So I'd cut it short here. From here on the story revolves around the characters of Karthick (an enraged artist - with himself and the world), Yamini (the fighter, willing to go through all 12 rounds) and the world around them.
The movie shares some elements of "A beautiful mind", Selva's audience is different therefore I appreciate he has given some entertainment quotient along with storytelling. Catch this in theatres ( 4 on 5).
