During the summer, Jules, 10 years old, is welcomed by a young couple in the countryside, because his mother had an accident. How to feel at home in a village where its inhabitants are shaken by deep antagonisms. How not to fear what's behind « Les Hautes Herbes », the tall grass?

When their aunt's inheritance is given to their annoying cousin, three brothers and sisters have to work to get it back.

It is the moment of the first holiday departures, the weather is nice and warm. Leo, aged nine, is alone with his father, his mother has just died. He does not know what he is going to do, tomorrow, or later.

Elodie and Marie, two teenage girls in a city where the housing crisis worsens by the day, are faced with a lack of prospects offered by the future, and see their chances of independence gradually disappearing. Elodie and Marie suggest a solution more extreme than not; empty apartments unjustly occupied by the "old" that, in their eyes, are the origin of the current social imbalance. In this journey through the initiatory path of adolescence, they discover that behind their cold calculations, human beings are just as lost they are.