Daniel Boehm 
The Surprised Visitors [EPUB ebook] 

Bella the butterfly goes on a daytime adventure where she brings smiles to those in need. Once her mission for the day is done, she goes to bed and becomes Bella the Bedtime Butterfly. As Bella the Bedtime Butterfly, the joins her as her smile warrior, and help save the kingdom from Frownster the dragon. You must turn frowns upside down in order to save the prince and princess!

Bella helps three people who are sad or upset. She brings smiles to their faces. Once she has put smiles on faces during the day, she tucks in for the night and becomes the magical Bella the Bedtime Butterfly. You help her save the kingdom and its occupants from Frownster, the dragon who has breathed his frown breath on the kingdom.