The majority of human population turned into zombies due to a virus spreading over the internet implanted by extraterrestrial intelligence.
You're one of the last alive holdouts in a depopulated city. You spend your remaining time with various fanciful pursuits aiming to delay the time of the final munching (of your brain).
You have an inkling that the first infection vectors might have been the auditors you had to deal with a couple of months before - such a short time elapsed since then, and so much has changed...