Simon was your friend, but one day he suddenly disappeared, no one knew where he was or where he could be as if he sinked into the ground. You couldn't agree with the emptiness he had left, which drove you into several mental illness.

Few years later, on one specific night you were walking down a street in the city you used to call home before you started to only see monsters you had to fight against. You saw a silhouette and immediately took out your gun, thinking it's another creature...