S1, E6: According to legend, in order to obtain terrible power, Dongfang Qing Cang of the Moon Tribe became an emotionless monster. He killed his father, seized the position of Moon Supreme and led an army of 100,000 Moon Tribe soldiers on a path of devastation. Shuiyuntian (the immortal fairy realm), Cangyan Sea (the Moon Tribe), and Yunmeng Lake (the mortal world) were in grave danger.