A solar eclipse caused Yun Shiqian to enter a parallel world where two kinds of strange people existed, "mysterious masters" and "demon spirits". Later, Yun Shiqian got a pendant box named "Moonlight" with only half a crescent-shaped jade pendant, and learned that if he wanted to return to his own world, he had to collect enough "magic energy" for "Yueshe" so that on the day of the solar eclipse, "Yueshe" could take Yunshiqian back. So, Yun Shiqian began his journey to collect "demon energy" for "Moonlight". But what Yun Shiqian didn't know was that this solar eclipse not only brought her to a parallel world, but also a boy came to this parallel world, and this boy got another magic weapon "Debt-Free".
Concept: A dull girl and a boy grow and transform physically and mentally as they collect "demon energy" for a "magic weapon" in a different world and find a way home.