Mu Sheng, an immortal lord, forms a bond with Chang Yuan, a dragon orphan imprisoned in the Vast Sky. To protect him from the Jade Emperor, Mu Sheng reincarnates as an orphan named Er Sheng. Together, they navigate challenges, explore the mortal world, and uncover the truth about their connection. As they face powerful forces, they learn the value of love, sacrifice, and their roles in maintaining balance in the Three Realms.