Everyone warns night-shift delivery riders: after one in the morning, there are certain orders you must never accept.
The address is an old building halfway through demolition. The delivery notes are full of bizarre rules. No one signs for the order when you arrive, and when you turn around, you can never find your way out.
Lin Mo, a rider who works the early-morning shift, was born with an exceptionally strong constitution and boundless energy. He's encountered several of the station's supposedly haunted oddities, yet hasn't even lost a hair.
While others are scared witless by these abnormal orders, all he sees are the delivery fee and the countdown to being late.
An order for an old residential compound: Don't look back once you enter the building?
He clutches the food and marches ahead, thinking only about how being late will cost him three yuan.
A 24-hour convenience store: Don't look at the clerk's face?
He keeps his head down and scrolls through discount coupons the whole time. He pays, grabs his things, and leaves without even noticing whether the clerk was a man or a woman.
An abandoned office building: Use the freight elevator, and don't count the floors?
He thinks the freight elevator is too slow and heads straight for the emergency stairs instead.
Everyone else struggles to survive by following the rules. Lin Mo calmly makes his deliveries as he watches his account balance shoot up.
It isn't until he gets an order to an abandoned research institute outside the city that he discovers the rules' countless rifts scattered throughout the city are deeply connected to his parents, who disappeared eighteen years ago...