It finally came. The moment you were waiting for and everyone else had feared. The end of civilization. While the others are seeking shelter, you already built one.

You have been preparing. You are jobless but you have made a killing before the big cryptocurrency crash.

With that money, you have created an underground vault in your large backyard, a fallout shelter. While the end has come, you will decide who gets to come in and how the drug that you have tainted the water supply of the vault will react with their bodies.