Robert De Niro survives a hit from Don Luchese, snitches on him and goes into witness protection with his family.
After causing trouble in the Riviera, they are relocated to Normandy. Once there, De Niro beats up a plumber trying to shake him down, his wife blows up a super market after being insulted because she is American, his daughter beats up some ill mannered suitors, and his son beats up some bullies with the aid of his associates in the "school mafia."
Don Luchese learns where De Niro is and sends a hit squad.
The entire family fights and kills the hit squad, and is relocated once again.
Thanks Don P!