Penguin has a named Mikki Olsen. Whatever Penguin does, wherever Penguin goes, Mikki is always right there next to him. After a very tiring day, Penguin rushes to bed. When he wakes up, Mikki has vanished! But where he might be? A calming, reassuring story about . teaches your child key skills and helps with their development by: Cute and colorful, this book is a joyous read for toddlers. Inspire giggles and calm from your child as they gleefully point out the bright pink toy on each page.