Three weeks. Two sisters. One car. A true story. Raina can't wait to be a big sister. But once Amara is born, things aren't quite how she expected them to be. Amara is cute, but she's also a cranky, grouchy baby, and mostly prefers to play by herself. Their relationship doesn't improve much over the years. But when a baby brother enters the picture, and later, when something doesn't seem right between their parents, they realize they must figure out how to get along. They are sisters, after all.