At Astraea Academy, a hidden boarding school for magical creatures and a select few humans, eight students from completely different worlds find themselves drawn into the same mystery. Hongjoong, a human obsessed with magical legends, begins investigating the academy's secrets. Alongside him are Seonghwa, a lost siren searching for where he truly belongs; Yunho, a proud prince learning that rules can't solve everything; Yeosang, a faerie elf with a talent for finding trouble; San and Jongho, werewolf brothers struggling with their powers; Mingi, a fire dragon prodigy who can't stay out of chaos; and Wooyoung, a lunar witch secretly searching for the legendary Celestial Wand. When strange events begin occurring around the school—sealed rooms opening, ancient ruins awakening, mysterious songs echoing from beneath the cliffs, and secrets surfacing from the ocean depths—the friends discover that Astraea Academy was built on top of something far older than anyone imagined. As clues point toward the Celestial Wand, a forgotten civilization, and an ancient force sleeping beneath the sea, the eight friends must work together to uncover the truth before the academy's greatest secret awakens.