Forbidden Pop-Up Book

The Forbidden Pop-Up Book is a major plot device of Yoshi Topsy-Turvy. It is a book filled with spirits and is owned by Hongo.

In the beginning of the game, Hongo uses his magic to seal Bowser and his armies, who were causing chaos at Yoshi Island at the book. However, Hongo fails and accidently seals the entire island in the book. In the Forbidden Pop-Up Book, Yoshi, helped by the Yoshi Island Spirits, goes on a quest to defeat Bowser and bring Yoshi's Island back to normal.