A workplace comedy about a pair of prison guards.

A Duchy of Normandy crank nostalgic wants to give his homeland back its power of days gone by. He wants to create a huge historic park to the glory of William the Conqueror, helped by an upstart documentaries director.

Corinne Maillard is the director of the Chénoise detention center. Day to day, she tends to be overprotective of the inmates and her rather clumsy team of guards, like an smothering mother. But everything changes when her son, with whom she has lost contact, is incarcerated in her facility. She tries to reconnect with him while continuing to fulfill her responsibilities.