A short story about one adventure to find the white river their mother sings about before bedtime. I wish the story was a little longer however it works. While the storyline of following the song is similar to the Frozen II movie, this book is more of a prequel to the Frozen II movie. The illustrations by Denise Shimabukuro & Maria Elena Naggi are the highlight of this book. Stunning colors and subtle details in the illustrations enhance the story. ( )