Known as the largest cave in the world, Vietnam's Hang Son Doong is as amazing as its size and as mysterious as a landscape we have never seen before. Since this cave has been maintained in a sublime state for a long time, it seems that it is our duty to enjoy it with the eyes. Therefore, it is not unusual to criticize the Vietnamese government's plan to install a cable car and develop it into a tourist destination. But is that really the case? Who are those who insist that the cave should be preserved? Are those who insist it aware of the poverty of the indigenous people around Hang Son Doong? Do they know that the indigenous people's expectations for tourism revenue stemmed from their desire to pass on a better life to their descendants, not their pursuit of wealth? The film shows that various expectations related to the superb view of nature were formed based on different economic and social backgrounds. Do we not force anyone to make sacrifices in the name of reasonableness? Is there something reasonable for everyone?​