Humanity's exploration of the sea has never stopped until the mysterious substance "Source Crystal" was found from the deep sea. The development of mankind was different from the past. It also accidentally discovered the "mysterious cause", an unknown space deeper than the deep sea and beyond imagination. Countries discovered the utilization value of the deep sea and launched crazy deep sea exploration and research. Over a hundred years, sea creatures gradually became violent due to overdevelopment. Some weak creatures even went into hiding and were once thought to be extinct. The strange thing is that the sea level has risen every year since humans frantically explored the deep sea. Even if humans stop this series of development, there will be no way to change it until there is not much land left. A series of crises ushered in the era of half-sea survival for mankind and prohibited the exploration of the mystery to prevent greater crises and make fragile survival more difficult. However, some extremists believed that the mystery could allow humans to develop better and even change the current situation, thus giving birth to the "mystery explorers" who explore the mystery.
Mission: Exploration and Rescue