Caroline, an environmental activist, has the ambitious project of creating a pilot farm combining market gardening, restaurant and education. She meets Jean-Marie, heir of the Belgian chemical group Solvay. At the first sight they form a perfect team: Jean-Marie has money and land, Caroline has a promising project. Together they decide to engage the family tree nursery, located on the outskirts of Brussels, in an ecological transition. But little by little they will discover that their desire for change may not have been exactly the same...