After the success of Tous pour une !, let's go back to Imany and her friends in the schoolyard. Cassy is a new student in Imany's class. And she's very good at soccer, which makes Nell and her team very happy. But for a month, Cassy is always absent. In class, but especially during training and matches, which annoys her teammates who don't want to talk to her anymore. Imany, Aslan, and Alessio investigate what's going on. No way they'll leave her all alone! They discover that Cassy sleeps in a trailer with her mom and has to walk an hour in the cold to go to class. All the school protest in front of the city hall to ask for housing aid for Cassy's family. That solidarity moves all the village, and a lady will offer to share her house in exchange for help, while a social housing project becomes available.