. Blue Star: The environment has collapsed and mutated monsters are rampant. An advanced civilization called the "Guardians" has arrived and used a "light curtain" to isolate most monsters and temporarily preserve human civilization, but resources are running low.
2. Exploration of other worlds: In order to obtain resources, "Guardians" open five major areas, and "Explorers" are randomly selected from various countries every day to enter. Each person can upload materials once a day, and the "Guardian" will perform a random 100- to 10,000-fold critical strike and return them to their country.
