It will be something like spin-off, restart. All events in the POSTAL series "Postal2, AW, PL, Postal 3" are ignored. Protagonist is still the same "The Dude" who lives in city of "Paradise" and deals with household affairs. Looks like it's same thing, but with slight differences: "The Dude" now teenager.
The textures and yellow tone says it's apocalypse, but it's pretty... empty :/
Textures looks good, add just some mess and broken stuff, there shoudl be cracks or even ceiling/ground broken :)