Drawing on the Classic of Mountains and Seas and combining ancient mythology with mystery-solving, this story creates a “Secret Realm of Mountains and Seas” hidden behind the ordinary world. By deciphering fragments of ancient texts, divine-beast totems, and mechanisms within the secret realm, the main cast gradually uncovers a shocking secret left behind by the ancient gods: a crisis of “imbalance in the Heavenly Order” spanning a thousand years. The forces involved include both surviving ancient beast tribes and mortal schemers seeking to seize divine authority.
