Tarun, an out-of-towner architect moves in with his family to a luxurious bungalow that he has acquired on a rather cheap rent. Ten year old Taman and six year old Nimmi who are often at loggerheads find their own activities to do in the new house.
Taman spends his time on videogames and TV whereas the curious Nimmi spends her time exploring the various spaces of the house. During one such exploration Nimmi finds a cute looking doll. Soon after the discovery of the doll Nimmi starts including 'Shabbu' in all her activities. The family mistakes Nimmi's new doll to be Shabbu.
But they are left surprised as Nimmi points at an empty space and introduces her invisible friend as Shabbu.