"It's time for Ruby and her family to celebrate two extra-special harvest holidays. For the Mid-Autumn Festival, she and Nainai pick out fruit, nuts, and red chrysanthemums from the store. And with Zayde, Ruby buys a lulav and etrog from the market for Sukkot. But something is missing to truly combine these two celebrations. Can Ruby figure out the perfect way to blend the Jewish holiday of Sukkot and the Chinese Mid-Autumn Festival?