Zombie apocalypse

The zombie apocalypse has begun...
The first five weeks weren't too difficult, but then... Supplies started running low and there were very few people left. You and Sasha (your friend) decided to go and look for food and water. But you saw the news that there was a vaccine and it needed to be found, so you went for more than just supplies.

“Let’s find a vaccine,” you asked Sasha.

Are you crazy? What if we turn into each other? He said.

We still need to go for supplies, you replied.

You decided to go all the way and find supplies and a vaccine.