Heart-stopping footage captured the moment a little boy fell between a train and the platform in Sydney, Australia. The child and his mother were waiting to board the train when the doors opened. The pair walked toward the doors, and suddenly the boy vanished. He fell right into the gap between the train and the platform. The mother and passersby immediately put their arms up to get the attention of train staff. Good Samaritans then pulled the unharmed child back to safety.