A lazy station master almost kills people, and nobody makes it feel this tense from a desk chair. The movie trusts you to understand that small negligence in invisible work is the most dangerous kind. It's a five-minute argument for why procedure exists, built so quietly you don't realize you're being lectured until it's too late.

A carefree station master nearly causes an accident between two trains in this movie commissioned by the Japanese National Railways. The film was made for the railway's new hires, using his relaxed approach to the job to show how close a lapse can come to disaster. As a training piece for incoming railway staff, it treats a near miss on the line as a lesson in why attentiveness matters at work.