Thefts, burglaries, petty crimes of all kind are developing. The police station is ccrowded. It becomes hard for our cops to cope with the stealing of evegetables in a garden and the shop lifting of a beautiful prostitute and the assault of an old lady by two teenagers.

Everybody goes out on Saturday nights. Teenagers are bored and get drunk, girls get dressed, boys escape from their homes. And sometimes things go wrong. Teenagers get drunk to coma. Even parents are out of their minds. Everybody shows up at the police station. The night will be long, very long.

An epidemic of flew has emptied the police station. There is a small riot in the suburbs at the Cité des Muguets. Fighting ends up in throwing rubbish bins. The police has hard times waking up a drunk asleep in his car while his daughter is crying on the back seat.

Things quickly go wrong. An arrested boy tries to commit suicide in the police station. His father gets very angry but the family is so bizarre that Kreusky and her team decide to dig deeper. The drug deal in the Cité has brought the narcotics at the Police station.

It's Christmas Eve. The Christmas tree is in the cafeteria, everything's fine. Except that an ordinary man decides to burglar a small jewellery. He takes the saler as a hostage. A school teacher fails at taking care of her own son and she accuses her sister to lock her up.

A flagrante delicto ordered by the Chief officer goes wrong. Lieutenant Karine shoots. Too hastily. The whole story started because of Pascal the unlucky guy who opened a French Fries House near the police station. Hold up by the cops, hold up by the Cité, he is about to commit suicide.

Sometimes the jokes of well raided kids may go wrong. It's so funny when you are 14 years old to come with a band and steal some croissant from a bakery. What could the police do about it? They can't just wait for the kids to come. Until the bakery is ransacked and the baker goes mad.

Sometimes two girls fall in love for the same guy. Two teenagers fight and rip for the sake a stupid guy who is playing with them. The two girls finally understand that he betrayed them for a third girl who is not even from the city. The decide to take a revenge.