The Guardians of the World are used to protect the world. They resist the common enemy - the Devourer of Worlds. Chengge is one of them. He joined the ranks of Guardians in order to find his female partner - Cheng Xi. In a square, he met Jiuyi and Xi, who are also Guardians. The three of them have the same goal - to destroy the Devourer of Worlds and find their relatives...