In this family comedy filled with laughs and outrageous situations, FBI agent Malcolm Turner faces a new challenge when his wife asks him to assume the identity of a disguised grandmother to spy on a family that could be involved in a series of robberies. Apparently, everything seems straightforward, but Big Momma's return to the scene is not what it seems.
Malcolm, who has already made a name for himself in his role as the lovable and endearing grandmother, infiltrates the home of the suspicious family, where he quickly becomes the neighborhood sensation. While trying to uncover the truth behind the crimes, he also has to deal with the ups and downs of family life, including conflicts between adults and teenagers that plague the household.
With his trademark exaggerated humor and ridiculous situations, Malcolm must learn to navigate the world of family relationships while keeping his disguise intact. To make matters even more complicated, he finds himself increasingly attracted to one of the key figures in the family he is spying on. The tension between his feelings and his professional duty creates hilarious and touching moments, confronting him with dilemmas he never imagined.
This comedy of errors promises laughs, emotions, and lessons about family, identity, and the surprises life presents when you least expect them. Get ready for an adventure filled with craziness and a big heart!