Felix, the Demon Lord of the Demon Realm, reincarnates as a disowned son of the Fang family in River City. After awakening his past memories, he vows to protect his paralyzed wife, Zoe. Using his extraordinary power, he takes revenge on the Fang family, confronts the Liu family, and establishes Jade Pavilion and Zolix Pharma. He heals Zoe's legs. In the end, Felix rejects the Ten Kings of the Demon Realm's call to return and chooses to stay in the mortal world with pregnant Zoe.