In the wilderness of mountains and seas, people roam freely in the world, playing swords, singing songs and laughing forever, and traveling through thousands of mountains and rivers. The story of a mortal who got the jade plate of 'Mountains and Seas' and descended into inexplicable time and space, in the mountains and seas, there are countless Strange beasts, ghosts, endless fairy tales, let me tell you carefully, let me talk about mountains and seas.