High immortal Lan Quan, the medicine king of the nine heavens known throughout the realm for his medicinal skills. Obsessed with refining and making new magical pills, this led to his disciple going astray and becoming demonized.

To rescue him, Lan Quan dies in the process but years later is reborn and this time he swore never to let his disciple stray from the path of righteousness.

Who would have known that his newly found attentiveness would drive his disciple to act suggestively towards him?