In 2012, saturation diver Chris Lemons (Finn Fole) was working on undersea gas lines at the bottom of the North Sea. When the support ship’s dynamic positioning system failed, it caused the vessel to drift off course, away from the Lemon who was tethered below. This put immense stress on his umbilical cable (lifeline), which eventually snapped as the movement of the waves grew too strong. Trapped 100 meters below the surface with only minutes of oxygen remaining, he faced a life-threatening ordeal. His crew mates Duncan Allcock (Woody Harrelson) and David Yuasa (Simu Liu) were suddenly involved in a dangerous race against time to save him. This film offers an intense portrayal of the dangers of deep-sea diving and the desperate fight for survival in a seemingly impossible situation. Based on a true story, the underwater environment is realistically recreated and the emotional reactions from Lemons colleagues heightens the tension. The acting, character development and plot are all passable – the outcome is miraculous. A decent thriller that will leave you gasping for air.