July 24, the world premiere. After setting world records such as "living with 700sharks for 24 hours" and "the coelacanth found extinct 60 million years ago", the protagonist Laurent Ballesta will challenge to live in the twilight zone 100m below the sea for 28 days. At the boundary of human physical ability, to explore the unknown territory of this deep sea. The death squad, composed of four of the world's top diving experts and marine biology experts, has to overcome the challenges of life and mentality brought about by a diving chamber of only 5 square meters, in addition to a few hours of deep-sea exploration every day.