When Samuel wakes up one morning, he finds himself in his bed transformed into a gigantic hippopotamus. From one day to the next, he no longer fits into bed or into his room, nor does he go through the door, nor does he fit into his shoes. He even grows a mustache! How will he now, with such a size, be able to go to school and continue with his daily life? Catarina Sobral, the talented Portuguese author and illustrator, presents us with So So Big, a colorful allegory of growth and change.