Sakthi(Dhanush) is a typical Tamil cinema college student for whom college seems to be a place to smoke, drink and tease girls. Shruti(Diya) and Sakthi start off on the wrong foot but soon become close friends. Dhanush falls in love with Charu(Parul Yadav), a timid Brahmin girl who joins the college and tries to convince her of the seriousness of his love. Though Charu too seems to be falling for him, their romance does not proceed smoothly.

Following the trend in recent movies, Dreams too recounts its story in a flashback with the opening scene showing Dhanush being produced in court for murdering a college girl. But unlike 7/G Rainbow Colony , the set up for the flashback reveals a little too much here. For instance, while we see Dhanush and Diya become friends, we know that another girl will enter the picture soon since Diya's name is not the one Dhanush mentions in court. Also, the end becomes predictable once a key act occurs about three-quarters of the way into the movie and the climax, which would have been quite emotional, lacks punch since it turns out to be anti-climactic. But Kasthoori Raja does deserve credit for maintaining unpredictability atleast upto a certain point.

The antics of Dhanush and his friend initially are quite crude with one of his acts in Diya's house definitely crossing the line of decency. Also, Kasthoori Raja himself seems confused about the relation between Dhanush and Diya. While their coy glances and phone conversations point to the flowering of a romance, no such thing happens and they seem perfectly comfortable with each other as friends. But the relation between Dhanush and Parul is depicted nicely. Though the characterization of Parul reminds one of Sethu , things are handled in a lighter vein here and the way Dhanush creates an impression on Parul's mother is cute and funny. Parul's reactions to Dhanush's behavior are also quite natural, making their relationship quite believable.

Since the climax itself is predictable because of the revelations in the opening scene and it is dragged on to give Dhanush the chance to display his emoting skills, it fails to be as emotional as the director has obviously hoped for. The movie then goes into sermonizing mode in the end with everyone from 'Pyramid' Natrajan to Rajesh having a say on the actions of college youth and the repercussions. The incidents and stories brought up are effective in putting their point across and Natrajan has a few nice lines on the responsibilities of parents (though his levity, which served him well in earlier scenes, seems misplaced he is in court on a case where his son's classmate is dead).

With the movie being in the making for a long time, Dhanush's appearance seems to vary from one scene to the next. He has some good expressions and body language and comedy seems to come naturally to him. Diya seems lost because of her character's vague characterization while Parul overacts in many scenes. Kuyili too misses many chances for making her character really humorous by overacting. 'Pyramid' Natrajan's character becomes likeable both due to his lines and his dialog delivery. Songs are pleasant and with only 1 'traditional' duet, their picturization doesn't get repetitive or tiring either.