You were awoken by a scream and not just one but a lot of them.
You came to check your windows and saw a bunch of people
No, upon closer inspection, they did not look like a normal person.
Pale skin, decaying parts, internal organs that was supposed to stay in is visible and eyes that only had greed and hunger on them.
You knew that they weren't human at all.
Unbelievable as it may seem, you knew that they were zombies.
You then realized that you were in an apocalypse
and to be more precise,
A zombie apocalypse