On Christmas Eve, we want everything to be perfect and often everything escapes us ... This is the moment when everyone is brought back to their reality, whether beautiful or complicated. In this building on a Parisian street, Christmas will be a bit special this year ... Here, people live together who hardly know each other, who whisper little "hello" to each other when taking out their trash or going to work. When the destinies of these excited neighbors, depressed or amazed by the magic of Christmas, intersect and make sparks ...