ali, mutu and ah kao are roommates. staying at 60th floor in a apartment. one day the lift were down so they have decided to walk back by taking stairs. so Ali was suggesting each of them gonna tell a sad story while walking up so that if they were telling jokes, they would laugh and will be run out of breath. so Ali starting to tell how miserable life he is having, by the time he ended his story, they have walk up to 20th floor. then comes to mutu’s turn. so mutu were telling his childhood story, how bad he got beat up by his drunkard dad, and they have reached 55th floor by the time he finishes his story. now it is ah kao’s turn, and ah kao just turn on his sad face, saying that “well i guess today will be my saddest day of all, my dear friends, and you are not gonna like it very much. i just realize that i have left our house key inside my CAR!”