The artificial environment built by Eureka within the intelligent coral-like scub coral When that virtual world crumbled 10 years ago, its inhabitants suddenly emerged on Earth. Since this extensive merger, the people from the virtual world refer to themselves as "Green Earth," while the humans from the real world refer to themselves as "Blue Earth," and they have constantly gotten into numerous disputes below the surface. Dewey Novak, a top officer in the Green Earth Armed Forces, eventually rises with his allies and, in an effort to save their own honor, implements a massive terrorist plot. Eureka, who is hated by everyone for being the primary cause of the turmoil, has advanced to the rank of high-grade combatant in the UN's A.C.I.D unit. Exist in to maintain peace in this world... She decided to follow this road of atonement. One day, she is instructed to guard Iris, a young "Eureka" with the capacity to command scab coral. At first, they quarrel a lot, but as they retreat alone, they begin to understand one another. A catastrophe will soon affect the entire planet, and when it does, Eureka will use all of her power to fight. What future lies at the conclusion of her wish, "I want to safeguard Iris and this world"?