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A 30-second continuous handheld take escaping a flooding cross-passage under a river, real-time throughout with no slow motion anywhere. Two people: an engineer in a hi-vis vest and a hard hat with a headlamp, and a younger colleague she is dragging along with her. Water is at knee height when the shot starts and rises visibly across the whole clip. Emergency lighting every ten meters with half of it already dead. 0 to 6s: Camera behind them at chest height, following. They wade hard toward a lit doorway forty meters off. The water is at the knee and moving against them. 6 to 13s: The younger one goes down on something underwater and she hauls him up by the vest without breaking stride. Water reaches mid-thigh through this stretch. The camera closes to two meters behind them and stays there. 13 to 19s: They reach the doorway and it will not open. She braces a boot against the frame and pulls the handle twice. The water is at the waist now and pushing both of them into the door. Her headlamp is the only light on either face. 19 to 25s: It gives, and the pressure behind it drives the door and both of them through into the next section, which is dry. They go down hard on dry floor with the water coming through after them. 25 to 30s: She gets up first, puts a shoulder into the door, and closes it against the flow while he throws the wheel lock over. The water stops. The shot ends on the two of them down on the floor, soaked, with the sound of the river on the other side of the steel. The camera never cuts and never rises above chest height. Water only ever rises. Both people keep the same clothing and gear throughout, and her headlamp stays the only moving light source. Audio: water moving in a confined concrete space with hard reverb, breathing and shouting with no intelligible words, a boot on a steel frame, the door giving, the flow through it, then the door closing and a sudden drop to dripping. No score.