"Little by little, Penny Lowry is making it through the fifth grade—with a bit of help from her friends Maria, Kristian, and Rocco, as well as her lovable dog Cosmo. And there's a lot of change to deal with this year! Penny's newborn twin brother and sister have everyone in her family on their last nerve with their crying. Her friends Maria and Chloe are spending a lot of time together without inviting Penny along, making her worry they might...