Rating:- 5/5 (overall) .
It is an excellent movie, with amazing graphics and VFX. The movie mainly deals with the birds' troubles caused due to harmful mobile radiations and other mobile networks. Pakshirajan, an ornithologist (the person who studies birds) , understands the birds' feelings. To reduce the harm, he holds campaigns for reducing radiations, but no one listens to him. Finally, he suicides due to death of many birds, and his negative aura comes back to trouble humans. To stop this, Dr.Vaseegaran brings back Chitti, the robot, and the fight continues. Many more interesting shocks come in the movie, with twist and turns, and I wouldn't reveal all the things. To know them, watch the movie!