3, famous for the Kolaveri Di song sung by Dhanush, is a pychological thriller. Ram and Janani are madly in love, and have been childhood sweethearts. Janani is currently in the process of recollecting her flashback, as she is weighed down by a tragic present.
Like its best-performing sub-brand, Kolaveri Di, the movie 3 itself is an extremely successful marketing ploy designed to draw eyeballs and attention to a central premise gone horribly wrong. Mr and Mrs. Dhanush are proven wonderful marketers, and maybe even filmmakers, to an extent, but getting 3 generations of people to flock to first-day shows of 3 might be the best they can do for the film, since it's all downhill from here.
The movie opens with a family mourning the death of someone. Cut to the flashback, where Intermediate kids Ram (Dhanush) and Janani (Shruti Hassan) are ....