This is an omnibus-style story where Haneul, who accidentally entered the world of great figures' biographies with the book fairy Byuri and Ddungji, corrects the stories of great figures that the mischievous goblin 'Dodo' has messed up. For today's children, who can learn about the lives and achievements of great figures simply by searching the internet, biographies of great figures are no longer stories of people to emulate or dream of, but merely information needed for assignments or studies. This story aims to allow children to understand the lives of great figures more actively while also having fun, by showing Byuri and Ddungji correcting together the stories of great figures that the mischievous goblin 'Dodo' has messed up. Children will meet and interact with various world figures alongside cute goblin and fairy characters, and will cultivate new goals and dreams every day.