BLUE REFLECTION: Second Light follows the adventures of three students, Ao Hoshizaki, Kokoro Utsubo, and Yuki Kinjou. Suddenly transported to a mysterious floating academy, they decide to search for clues to find a way back home. Stripped of all memories, they only remember their names. One day, they discover a path leading to a new world, but when they try to unravel its mystery, they are immediately joined by a horde of bloodthirsty monsters. By facing these vile creatures, they unlock previously unknown powers, which only further accentuate the enigmatic nature of their surroundings.