Twenty years ago, Qin Wangshu appeared on the seaside of S City, China, following a mirage and became an orphan; twenty years later, Qin Wangshu disappeared from this world following this mirage called "Penglai Wonderland".
In a strange world where only mortals, immortals, and demons exist, he is alone and just wants to return to his hometown.
As the return journey unfolds, Qin Wangshu becomes increasingly confused. Is this seemingly bizarre world a foreign land? Or homeland?
What is the connection between the alchemist who seeks the elixir, the immortal who hates mortals, the disappeared goddess of the Dayue Clan on Penglai Island, and Qin Wangshu's hidden life experience?