An old man came to the control room and asked for your help. He said his granddaughter had stucked on the train and the doors wouldn't open. You checked it on the screen and there was some error indeed. It couldn't be solved remotly, so you had to go there and do it manually. Like in the old times. But let's see, it's not that easy. It was a long time ago. Check a train which is still functioning to get some idea where to start. You should hurry, because both the old man and the girl look are scared. Good luck!
June 16, 2015