On a rainy night, takeaway rider Li Feifan is struggling with rent. A delivery from his deceased grandfather breaks the dilemma: hidden in a wooden box with "Nantian Gate" engraved on it is a bronze key and a notebook filled with "takeout orders" of mythical characters - he is actually the "gatekeeper" guarding the door to the mythical world.
In order to collect rent, Li Feifan unlocked the mythical legacy while delivering food: the cloud-walking boots can instantly cross space, the moonlight box power bank can go back ten seconds, and the selfie stick can turn into a three-pointed two-edged gun. But the peace was soon broken: the "Future Evolution of Humanity Foundation" coveted heritage forces and pursued him. Qin Shiyue, the "guardian" who has recycled mythical objects for generations, informed that the objects scattered after the fall of Nantianmen were threatening the balance of the world. The interstellar scavengers "Vulture" tribe sent "Scavenger" machines to list the earth as a "civilization to be recycled".
From the energy fluctuations in the campus library, to the fight for the "Purple Gold and Red Gourd" (disguised as a thermos cup) at an abandoned construction site, to the Shanghai Tower's defense of the time and space anchor, Li Feifan juggles the identities of "rider" and "gatekeeper". He teamed up with Qin Shiyue and the Jiuzhou Guardian Bureau to use the mythical heritage to fight against the Foundation's conspiracy and the "Scavenger" pursuit.
When the sky cracks and space cracks open, and the city faces the threat of "planetary purification", this rider, who once worried about rent, takes on the mission of guardianship: not only to deliver takeaways in the mortal world, but also to guard the boundary between human civilization and the mythical world.
