Forbidden Pop-Up Book
From the Super Mario Wiki, the Mario encyclopedia
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 accidentally 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.