Neuilly Yo Mama! is a comedy film about a 14-year-old boy who moves from a Parisian suburb to a gated community after his mother's death. He has to navigate the challenges of fitting in with the wealthy residents and dealing with class differences. With the help of his cousin, he learns to adapt and finds himself caught up in various amusing situations, including rapping and playing tennis. The movie explores themes of snobbery, family relationships, and the clash of different lifestyles.

In 2008, Sami Benboudaoud discovered the hell of Neuilly-sur-Seine. Ten years later, now that everything is for the best for Sami who brilliantly completes his studies of political science, nothing will go for his cousin Charles of Chazelle.