Francis Bartek, a widower man of Polish descent, who has made fortune in the building field in Monaco starting from nothing, has two sons, Philippe and Alexandre, and a daughter Stella.
Finally, Stella is a haughty, brainless, capricious and spendthrift pest, who wants to get married with a handsome idle Argentinian, Juan Carlos, what his father rejects.
On overnight, the accounts of the family are blocked by justice for misuse of corporate assets and embezzlement, and the police arrives at their home to seize their goods.
The father escapes and takes his children to Marseille, in the very modest country house of his childhood, while waiting to prove his innocence.
After difficult beginnings, Philippe becomes a taxi-bike driver, becomes friend with one of his taxi co-workers, and starts with him a business in vintage sport shoes.
Stella's fiancé discovers the staging invented by Francis to experience his "rotten spoiled" children and force them to confront themselves to the working field.
On the wedding day, Stella learns that Juan Carlos is in reality called Kévin Lepoutre, who admits that his family was threatened with death and chose to come to France and change identity.