This story revolves around two teenagers of different identities and different cultural backgrounds, Fa Hua and Lan Ge, who, because of a magic weapon called "Only Pearl," were connected together to save humanity. The two teenagers have a symbiotic relationship because of the artifact, which makes the two teenagers with very different personalities need to go through a variety of tests together. With that, the relationship between the two sees subtle changes, and they begin to understand each other. Gradually, the two become as close as siblings. The two teenagers continue to cooperate with each other, trying to find out more mysteries about the "Only Pearl." But the mysterious power behind the two teenagers also slowly reaches out to them. In a matchmaking event, the sky devil clans Tianmo Yeming disguised herself as a mysterious beauty and said her purpose here was to claim the "Only Pearl." The two teenagers are guided by the Grand Commander and decide to set out on the road to revenge, but at this time they must quickly train themselves and both enter the mysterious cultivation with the help of the Pearl. Can they take on the heavy responsibility of fighting the upcoming attack of the demons and protecting the artifact "Only Pearl?"