Extreme situations change people. They can push (or produce) qualities which we have never expected to have. Stress can be equally damaging and constructive, giving us the opportunity to transform the ideas we have about ourselves, about the people around us, about the world we are living in. This is what happens to Rie, a PR specialist on a visit to a construction spot of the Copenhagen Metro. While she is interviewing specialists who are working on a tunnel-boring machine, walking with them under the ground, a life endangering accident occurs. Forced to survive and find a way out in one of the most difficult for a human being conditions, Rie, who is caught in an airlock with Ivo and Bharan, sees her life in another perspective.