This is the story that always appears in the dreams of Kokone, who eventually becomes a high school student. What is the secret hidden in the fairy tale that Kokoneheard as a young boy? And then, what is this secret entrusted to his father Momotaro's mind? This movie depicts the adventures of the main character, high school student Morikawa Kokone, who appears in the dreams of another main character, Yasue, another nap princess.