To obtain peace and harmony, the people of Zoidion are divided into twelve zodiacal regions: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces.
Each region is ruled by a Gate Key Bearer capable of summoning the region's Celestial Spirit. But when almost all of them are found with unidentifiable sleep-causing sickness, and the most powerful 13th Gate Key was stolen . . . the remaining leaders decided to train twelve talented people, one coming from each Zodiac Region.
Once all of them are gathered, they will already be their apprentices, responsible of bearing the 12 Gate Keys. They will be trained together on how to open the 12 Zodiac Gates to prepare them for the upcoming battle which day . . . is still unknown.
Alex Immegray who has an unnatural ability to sense death is transferred to Montgomary University. She is very happy when she meets the likes of her with supernatural senses to detect death and above normal events. As interesting as finding students who possess such gift, would her life be as she has never thought to saving her new found friends' lives from a deadly psychopath predator who's obsessed in finding out ways to cut their heads . . . literally.
Be with them as they remove the killer's mask with cryptography-codes and ciphers. . . . But beware . . . they might be gotten to the biggest revelation they should have wished won't be revealed.