Going by the posters of 'Helicopter Eela', it shows how Kajol is a puppeteer to her son as the puppet. Now the trailer of the movie has been released which shows exactly the same. How Kajol has turned into an overprotective mother and how that needs to be changed. Today, Ajay Devgn, the co-producer of the film apologised for accidentally missing out the lyricist's name from the film's trailer which he said to have rectified.