Every kid imagines what it would be like to be an adult. He wishes he could grow up quicker. Of course, once he grows up, a small part of him wishes he could go back to his childhood days. Quite an irony, isnt it?
Theres a line in AAO WISH KAREIN that goes, If you want to be a part of a fairy tale, its important that you believe in it [fairy tale]. The statement is applicable for everyone desirous of watching AAO WISH KAREIN.
In terms of concept, AAO WISH KAREIN bears a striking resemblance to the Tom Hanks starrer BIG [1988]. A decade-and-a-half ago, the Salman Khan - Sridevi starrer CHANDRAMUKHI also tackled a similar theme. In that respect, the concept isnt alien at all.