Uni has a new friend, a butterfly! First, Uni finds its cocoon and cares for it. It's incredible to watch nature's magic as the cocoon develops into and emerges as a butterfly. But Uni notices that the butterfly seems sad while other butterflies that are flying free seem really happy. So, it's time to say goodbye and allow the butterfly the freedom it deserves. That is what true friendship is all about. Fans of the picture books, as well as new Uni fans, will be excited to join this bighearted unicorn and friends on a new adventure of learning about caring for another and friendship. Step 2 readers use basic vocabulary and short sentences to tell simple stories. They are perfect for children who recognize familiar words and can sound out new words with help.