At the end of the earth, the environment has deteriorated and the earth is in danger of exhaustion. Due to the special genes inherited from her ancestors, the girl Pu Cao was sent to the adjacent space, the Secret Realm of Falling Clouds, to find an object called the "falling cloud lamp" to repair the damaged earth. For the sake of her beloved, the girl resolutely accepted the task. Pu Cao went through hardships in the secret realm and finally learned that only Gu, the great demon king of Yanyuwu, might know the whereabouts of the "Falling Cloud Lamp", but Gu offered to let the girl stay in exchange. Can the girl finally get the "falling cloud lamp"? And where is the "falling cloud lamp"?