Brainstorm: Day 5

My 5th brainstorming idea would be a short film about a man who wakes up one day and everything in life that he once knew has disappeared. His family, his loved ones, friends and his entire life is gone. He sets out to find out where everyone has gone but has no clues on where to begin his search. How long was he asleep for? Where could the whole world have disappeared to while he was asleep? Will he find what he is looking for or be alone forever?