Catherine and Yann have been in a relationship and in love for many years. But since Yann quit his job, he has developed a passion for bonsai. A devouring passion that takes up a lot of space in the eyes of Catherine, who feels somewhat neglected. The situation does not get better when their daughter Anna, and her boyfriend Thomas, come to settle in their home following an apartment galley. Cohabitation turns out to be more than difficult for the two couples who oppose everything...