There is a mysterious WeChat group called "Shao Shiba Maintenance Team". All members are maintenance workers/technical geeks. On the surface, they chat about dirty jokes, grab red envelopes, and compete with each other to see who can eat better. Behind the scenes, they are entangled in a series of strange things in the elevator. It is lighthearted and funny + extremely scary when you think about it. There is no horror or blood in the whole process, and the main theme is the reversal of contrast.
