To bring order to the celestial world, the first Jade Emperor gathered representatives of the 12 Zodiac Signs, the 10 Symbols of Longevity, and the Obangsin to create Cheonjihae. Lyun joined this organization as the trainee Yellow Dragon. What does Cheonjihae look like on her first job...? A fantasy drama about a special agency that takes place in a celestial world where various races live together.