Mouse Yiyi's friend, Little Eight, was trapped in a terrifying place.
It was called Devil's City. Strange rocks jutted everywhere, and fierce winds howled. Once night fell, the devils began their patrol, devouring every outsider in sight.
Can Little Book Cat and his friend, the little monkey Qiqi, rescue Mouse Xiaoba? Can they uncover the secret of Devil's City?
Message: Don't be afraid. Trust science.
