Based on true events, renowned mountaineer UM Hong-gil sets out on a mission to Everest to retrieve his late junior climber's body and faces the greatest challenge of his life.Based on true events, renowned mountaineer UM Hong-gil sets out on a mission to Everest to retrieve his late junior climber's body and faces the greatest challenge of his life.Based on true events, renowned mountaineer UM Hong-gil sets out on a mission to Everest to retrieve his late junior climber's body and faces the greatest challenge of his life.