It was getting dark and everyone was trying to hide from something. My friends had gone into an abandoned building and closed the door behind them. I banged on the door, apologizing that I was late and to let me in. When I entered, there was about five or six of us but we were unable to lock any of the doors. The windows had glass shutters which we closed as the sun was setting. When I gave the door a nudge from the inside, it was enough to be noticeable from people running outside. I pushed against the person was trying to barge in before they had found another way in. I used a plastic chopstick to secure the door before moving onto the other one.