The apocalypse happened, but not in the way anyone expected. Plants underwent a major, rapid evolution seemingly overnight: and when humans woke up, they found their cities turned to rubble and their lives reclaimed by nature. Chaos ensued.
But that's not really your problem.
Your name is Zed, and you've lived in this world your whole life. You don't know anything else: in fact, the only other person you know is related to you and taught you everything you need to know to survive.
But when you return home one day to find the house being torn apart, your field in shambles, and your only companion nowhere to be found, you'll have to set off on your own for the first time to try put your life back together, and maybe for the first time, meet real people: but be careful.
They aren't like you.
Check out my blog, and my other games (Manor Hill, and Bad Ritual).