Mafia hitman Rocco mistakenly kills an innocent Italian family thinking they are the Manzoni family. The real Manzoni family, including former mafia boss Giovanni, his wife Maggie, and their children, is under witness protection in France due to their past with rival Don Lucchese. Giovanni buries a body in their new backyard to cover up his mafia ties, while Maggie discovers the quiet nature of their new town. The family tries to adjust to their new life, always wary of Lucchese seeking revenge.