BLUE REFLECTION: Second Light follows the adventures of three students - Ao Hoshizaki, Kokoro Utsubo, and Yuki Kinjou - who find themselves transported to a mysterious floating academy, searching for clues to find their way back home, with only their names as memories. One day, a path leading to a new land appears, but when the three protagonists set off to unravel the mystery, they are met by a horde of deadly monsters. By battling the fiendish creatures, they unlock unknown powers that only seem to deepen the cryptic nature of their surroundings.