Alternate reality 2.5.
A world where you are chained to your job, literally.
If you work in a desk job like me then you're chained to the chair and the chair can only move in and out from the desk with enough space to let you out.

Thankfully my job isn't too bad as I'm a Gamer, but it's kinda boring to sit here for so long with little to no interaction with others.
Online interaction isn't the same as talking to others in real life, the only real life interaction is with the person that brings in the food.

One day something happened underneath my desk, a portal opened up and someone or something crawled underneath my desk.