Lin Yan is an ancient book restorer and discovers that the "Book of Mountains and Seas" in his hand is a "loose-leaf book". By tearing off a page, you can enter the corresponding area, but the world in the book will change as the actual pages are damaged/repaired. More importantly, the dead beasts in the book will come to reality in the form of "literal ghosts". The protagonist needs to repair the pages of the book and avoid the "literal ghosts" to prevent someone from using the loose-leaf book to tamper with real history.
