Lu Cheng, former vice president of the Celestial Masters Association, accidentally finds himself walking through a university gate in his seventies. He happens to help a timid snake demon, only to be mistaken for the ancestor of the snake clan.
Lu Cheng: “All right, then.”
He takes the little snake for a stroll through the demon market and gets a divine weapon. He brings the little snake along to chat with Celestial Masters, becomes the legal representative of a new company, takes the little snake back to the demon realm, and receives a cave dwelling from the immortals...
Lu Cheng: “The little snake must have fallen for me. Humans and demons may belong to different worlds, but... all right, then.”
Bai Yu, a pig-nosed snake demon, is studying in the human realm to repay a debt of gratitude. Timid and easily frightened, he has a particularly hard time of it, until he is reunited with the ancestor of his clan. With the ancestor’s help, Bai Yu, who stayed in the human realm to repay his debt, enjoys one stroke of good luck after another and rises to the top of the demon realm. Grateful, he repays kindness with kindness: he gets a precious sword and gives it to the ancestor! He starts a company and makes the ancestor its legal representative! He gets three new cave dwellings and gives one to the ancestor!
Bai Yu: “Brother Cheng, pick an auspicious day. I’ll make you my god-grandfather!”
Lu Cheng: “What? Bai Yu, come here. I’ll help you be braver.”
Bai Yu: “Okay!”
Lu Cheng smiles and pulls the snake into his arms. After a while, Bai Yu finally catches his breath and asks, “Why did you kiss me?”
Lu Cheng: “To help you be braver.”
Bai Yu: “I’m timid, not stupid. But that felt pretty good. Let’s do it again.”
Lu Cheng: “Something’s not right here...”
After their true identities are revealed, Lu Cheng starts plotting to turn evil, while Bai Yu becomes Hei Yu and ties him up, taking him back to the demon realm.
Lu Cheng: “Where’s the timid, lovable little snake?”
Bai Yu lifts Lu Cheng’s chin with his foot. “Did you come here to claim me?”
Lu Cheng bends down and kisses the top of his foot. “Yes.”
A seemingly timid and lovable but actually powerful, sweet-on-the-outside-and-dark-on-the-inside pig-nosed snake demon shou × a sharp-tongued, scheming, devoted Celestial Master gong who wins himself over