Sometimes Moms have to leave their little ones at home for a short time. It can be a challenge. Especially for Penguin! There are tears and sadness, but Penguin likes the babysitter, Mrs. Duck. They have fun together reading and playing and hugging Penguin's favorite pillow. And soon, someone's at the door, Mom is back! This sweet new board book confides that missing Mom is hard for everyone, but little listeners will delight in the happy ending.