Writer-director Jonah Malak's documentary focuses on the diving expedition in South Africa that Don Shirley and Dave Shaw embarked on in 2004. This dive site has long attracted scuba divers worldwide, but this particular dive led them to discover the body of fellow diver Deon Dryer, who died and was trapped below a 300-meter sinkhole for a decade. They launched a sizable rescue mission to draw out the body, only to have Dave perish in the process. The film has Don narrating and reenacting some scenes of that fateful rescue, interspersed with camcorder footage of the actual mission.