He frequently gets scoldings from his mother Indira due to his bed-wetting habit despite being a grown up.
He insists Pappu take a medicine invented by him which will transform a boy to a fully grown man.
Pappu agrees and the scientist transforms him into a young man.
New is a 2004 Tamil fantasy comedy film directed, written and produced by S. Simran, Kiran Rathod and Devayani play supporting roles, while A. Pappu is an eight-year-old boy who is very mischievous always troubling his mother.
The movie's plot is borrowed from the 1988 Hollywood Tom Hanks starrer Big. New is about an 8-year-old boy who is turned into a 28-year-old man by a scientist.
Pappu's elder brother Kishore plans to watch a porn movie with his friends in his room to which insists on joining them.
When Kishore refuses and gets rid of him, Pappu cuts off the power out of anger creating a short circuit at home.