You wake up on a normal day of you normal life, you can’t remember your name (but this is not told to the player) you don’t remember how you got home and all you remember is fainting in a random street of the city.
As you start moving around trying to find out what happened you find notes left by a mysterious stranger (you wife). You find news papers giving you a little bit of insight of what happened and why you there. As you start remembering the house keeps changing, starts looking older and more rusty as well as destroyed. Some doors of the house are blocked, to open them you will have to remember, or remember where the key is or just solve a puzzle.
The more you remember new things start appearing out of nowhere, bags, trash, blood (normal stuff) when you get to the end of the game you find out there was a zombie outbreak, you got bitten and you fainted. You wife tried to help you and got you home, but you transformed when she was sleeping and you killed her. You look out your... New window (a giant hole on the wall that appeared out of nowhere) and you find out the state of the world after that you choose what to do... Gun yourself down before you lose it or... Go for a walk.