Joel Silver (YoYo) loves to be a comedian and play practical jokes. However, when he, his twin sister Ellie (YaYa) and the rest of their fifth-grade Hebrew school class find something surprising in the synagogue's sukkah just before the holiday of Sukkot, it's no laughing matter. Where did the mysterious four-legged visitor come from? What will become of it? Their unexpected adventure brings Joel and Ellie fact to face with the importance of shelter and caring for those in need.