One day, the Sumikko friends find an old pop-up book in the basement of their favorite Sumikko Café. When they are looking at the book, the mechanism suddenly starts moving and the Sumikko friends are sucked into the book. In the world of the book, they meet a lonely Hiyoko, who doesn’t where it is from or who it is.
“Let’s help Hiyoko find its home!” The Sumikko friends decide to help their new friend. The journey in the world of the book begins.
A shy bear who migrated south to avoid the cold. Pulled into the world of the Little Match Girl. Wants to be warm soon…
Am I even a penguin? Penguin has no confidence. Looking for itself. Pulled into the world of Arabian Nights. Sympathizes with Hiyoko and can’t look away.
The end of Tonkatsu. A good friend of another left-over character, Ebifurai no shippo. Pulled into the world of Little Red Riding Hood. Will it be eaten by the wolf?
Shy and timid, Neko usually gives its corner away. Pulled into the world of Momotaro, but the role of hero and the fight against a demon may be too much…
Is actually the last of the dinosaurs. A good friend of another “fake” character, Nisetsumuri. Pulled into the world of the Little Mermaid. It can swim even better now.
Am I Hiyoko? Doesn’t know. Looking for friends in the world of the pop-up book.