He was once the Demon Lord of Youming Realm in the Demon World, possessing unrivaled power and on the verge of ruling the mortal world. But things did not go as planned: the demon orb's backlash reduced him to a demon child. Fortunately, the orb protects him, and no one can so much as hurt a hair on his head. When he gets angry, his power spirals out of control, strong enough to destroy heaven and earth. She was once the Ninth Princess of the Celestial Realm, an incarnation of the Golden Crow. Punished with imprisonment for sneaking down to the mortal world, she remained playful by nature and showed no remorse, repeatedly violating the laws of heaven and stirring debate among the immortals. To restore their confidence, the Great Emperor Zhenwu sent the Ninth Princess to the Mortal Demon Immortal Pavilion to serve her sentence. By a twist of fate, the gears of their destinies began to turn, and so their story unfolds...