Undercover Agent Malcolm Turner must infiltrate the home of a suspected computer hacker as a nanny to gather evidence against him. He uses his alter ego, Hattie Mae Pierce, a.k.a. "Big Momma," to gain access to the family and manage the household while secretly trying to uncover information on the hacker's deadly computer virus.

Big Momma's House 2
An FBI agent assumes the disguise of a stout elderly woman and infiltrates a suspect's household as a live-in nanny, gathering crucial information and waiting for the perfect moment to strike.