概要：Since the 1940s, it has been known as "GRAYS"; Before their final invasion, people around the world believed that they visited our planet to study our species and civilization... But what if we're wrong? What if they just come to protect us? After a meteorite hit Earth and awakened extraterrestrial life inside the Earth, a young woman was kidnapped by aliens; GRAY "; To help hunt down and destroy this creature, it unleashed its deadly intrusion on Earth before reaching the second meteorite that fell to Earth decades ago.
